diff --git a/src/Microsoft.Graph/Generated/model/BookingAppointment.cs b/src/Microsoft.Graph/Generated/model/BookingAppointment.cs
index c4d76fae835..61faffca417 100644
--- a/src/Microsoft.Graph/Generated/model/BookingAppointment.cs
+++ b/src/Microsoft.Graph/Generated/model/BookingAppointment.cs
@@ -30,13 +30,14 @@ public partial class BookingAppointment : Entity
     
         /// <summary>
         /// Gets or sets anonymous join web url.
+        /// The URL of the meeting to join anonymously.
         /// </summary>
         [JsonPropertyName("anonymousJoinWebUrl")]
         public string AnonymousJoinWebUrl { get; set; }
     
         /// <summary>
         /// Gets or sets customers.
-        /// It lists down the customer properties for an appointment. An appointment will contain a list of customer information and each unit will indicate the properties of a customer who is part of that appointment. Optional.
+        /// A collection of customer properties for an appointment. An appointment will contain a list of customer information and each unit will indicate the properties of a customer who is part of that appointment. Optional.
         /// </summary>
         [JsonPropertyName("customers")]
         public IEnumerable<BookingCustomerInformationBase> Customers { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/BookingBusiness.cs b/src/Microsoft.Graph/Generated/model/BookingBusiness.cs
index 140b4cf0750..254913cefad 100644
--- a/src/Microsoft.Graph/Generated/model/BookingBusiness.cs
+++ b/src/Microsoft.Graph/Generated/model/BookingBusiness.cs
@@ -71,6 +71,7 @@ public partial class BookingBusiness : Entity
     
         /// <summary>
         /// Gets or sets language tag.
+        /// The language of the self-service booking page.
         /// </summary>
         [JsonPropertyName("languageTag")]
         public string LanguageTag { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/BookingService.cs b/src/Microsoft.Graph/Generated/model/BookingService.cs
index a97978eb211..d0beb8cf661 100644
--- a/src/Microsoft.Graph/Generated/model/BookingService.cs
+++ b/src/Microsoft.Graph/Generated/model/BookingService.cs
@@ -86,6 +86,7 @@ public partial class BookingService : Entity
     
         /// <summary>
         /// Gets or sets is anonymous join enabled.
+        /// True if the URL to join the appointment anonymously (anonymousJoinWebUrl) will be generated for the appointment booked for this service.
         /// </summary>
         [JsonPropertyName("isAnonymousJoinEnabled")]
         public bool? IsAnonymousJoinEnabled { get; set; }
@@ -106,6 +107,7 @@ public partial class BookingService : Entity
     
         /// <summary>
         /// Gets or sets language tag.
+        /// The language of the self-service booking page.
         /// </summary>
         [JsonPropertyName("languageTag")]
         public string LanguageTag { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/BookingStaffMember.cs b/src/Microsoft.Graph/Generated/model/BookingStaffMember.cs
index c2521379dd5..37ee67621fc 100644
--- a/src/Microsoft.Graph/Generated/model/BookingStaffMember.cs
+++ b/src/Microsoft.Graph/Generated/model/BookingStaffMember.cs
@@ -52,13 +52,14 @@ public BookingStaffMember()
     
         /// <summary>
         /// Gets or sets is email notification enabled.
+        /// True indicates that a staff member will be notified via email when a booking assigned to them is created or changed.
         /// </summary>
         [JsonPropertyName("isEmailNotificationEnabled")]
         public bool? IsEmailNotificationEnabled { get; set; }
     
         /// <summary>
         /// Gets or sets role.
-        /// The role of the staff member in the business. Possible values are: guest, administrator, viewer, externalGuest and unknownFutureValue. Required.
+        /// The role of the staff member in the business. Possible values are: guest, administrator, viewer, externalGuest, unknownFutureValue, scheduler, teamMember. Note that you must use the Prefer: include-unknown-enum-members request header to get the following values from this evolvable enum: scheduler, teamMember. Required.
         /// </summary>
         [JsonPropertyName("role")]
         public BookingStaffRole? Role { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/EducationTeamsAppResource.cs b/src/Microsoft.Graph/Generated/model/EducationTeamsAppResource.cs
index c13347177a6..c612395209b 100644
--- a/src/Microsoft.Graph/Generated/model/EducationTeamsAppResource.cs
+++ b/src/Microsoft.Graph/Generated/model/EducationTeamsAppResource.cs
@@ -29,24 +29,28 @@ public EducationTeamsAppResource()
 
         /// <summary>
         /// Gets or sets appIconWebUrl.
+        /// URL that points to the icon of the app.
         /// </summary>
         [JsonPropertyName("appIconWebUrl")]
         public string AppIconWebUrl { get; set; }
     
         /// <summary>
         /// Gets or sets appId.
+        /// Teams app ID of the application.
         /// </summary>
         [JsonPropertyName("appId")]
         public string AppId { get; set; }
     
         /// <summary>
         /// Gets or sets teamsEmbeddedContentUrl.
+        /// URL for the app resource that will be opened by Teams.
         /// </summary>
         [JsonPropertyName("teamsEmbeddedContentUrl")]
         public string TeamsEmbeddedContentUrl { get; set; }
     
         /// <summary>
         /// Gets or sets webUrl.
+        /// URL for the app resource that can be opened in the browser.
         /// </summary>
         [JsonPropertyName("webUrl")]
         public string WebUrl { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/EmailAuthenticationMethodConfiguration.cs b/src/Microsoft.Graph/Generated/model/EmailAuthenticationMethodConfiguration.cs
index 5c991f7f488..65cb2af0da9 100644
--- a/src/Microsoft.Graph/Generated/model/EmailAuthenticationMethodConfiguration.cs
+++ b/src/Microsoft.Graph/Generated/model/EmailAuthenticationMethodConfiguration.cs
@@ -38,7 +38,7 @@ public EmailAuthenticationMethodConfiguration()
     
         /// <summary>
         /// Gets or sets include targets.
-        /// A collection of users or groups who are enabled to use the authentication method.
+        /// A collection of groups that are enabled to use the authentication method.
         /// </summary>
         [JsonPropertyName("includeTargets")]
         public IEmailAuthenticationMethodConfigurationIncludeTargetsCollectionPage IncludeTargets { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/Fido2AuthenticationMethodConfiguration.cs b/src/Microsoft.Graph/Generated/model/Fido2AuthenticationMethodConfiguration.cs
index c60dec85158..61f6b413e63 100644
--- a/src/Microsoft.Graph/Generated/model/Fido2AuthenticationMethodConfiguration.cs
+++ b/src/Microsoft.Graph/Generated/model/Fido2AuthenticationMethodConfiguration.cs
@@ -51,7 +51,7 @@ public Fido2AuthenticationMethodConfiguration()
     
         /// <summary>
         /// Gets or sets include targets.
-        /// A collection of users or groups who are enabled to use the authentication method.
+        /// A collection of groups that are enabled to use the authentication method.
         /// </summary>
         [JsonPropertyName("includeTargets")]
         public IFido2AuthenticationMethodConfigurationIncludeTargetsCollectionPage IncludeTargets { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/Group.cs b/src/Microsoft.Graph/Generated/model/Group.cs
index 41eab05c8fa..3ad979a6e69 100644
--- a/src/Microsoft.Graph/Generated/model/Group.cs
+++ b/src/Microsoft.Graph/Generated/model/Group.cs
@@ -93,7 +93,7 @@ public Group()
     
         /// <summary>
         /// Gets or sets is assignable to role.
-        /// Indicates whether this group can be assigned to an Azure Active Directory role or not. Optional. This property can only be set while creating the group and is immutable. If set to true, the securityEnabled property must also be set to true and the group cannot be a dynamic group (that is, groupTypes cannot contain DynamicMembership). Only callers in Global Administrator and Privileged Role Administrator roles can set this property. The caller must also be assigned the RoleManagement.ReadWrite.Directory permission to set this property or update the membership of such groups. For more, see Using a group to manage Azure AD role assignmentsReturned by default. Supports $filter (eq, ne, not).
+        /// Indicates whether this group can be assigned to an Azure Active Directory role or not. Optional. This property can only be set while creating the group and is immutable. If set to true, the securityEnabled property must also be set to true, visibility must be Hidden, and the group cannot be a dynamic group (that is, groupTypes cannot contain DynamicMembership). Only callers in Global Administrator and Privileged Role Administrator roles can set this property. The caller must also be assigned the RoleManagement.ReadWrite.Directory permission to set this property or update the membership of such groups. For more, see Using a group to manage Azure AD role assignmentsReturned by default. Supports $filter (eq, ne, not).
         /// </summary>
         [JsonPropertyName("isAssignableToRole")]
         public bool? IsAssignableToRole { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/MicrosoftAuthenticatorAuthenticationMethodConfiguration.cs b/src/Microsoft.Graph/Generated/model/MicrosoftAuthenticatorAuthenticationMethodConfiguration.cs
index 54ba74f6436..e662ac21496 100644
--- a/src/Microsoft.Graph/Generated/model/MicrosoftAuthenticatorAuthenticationMethodConfiguration.cs
+++ b/src/Microsoft.Graph/Generated/model/MicrosoftAuthenticatorAuthenticationMethodConfiguration.cs
@@ -37,7 +37,7 @@ public MicrosoftAuthenticatorAuthenticationMethodConfiguration()
     
         /// <summary>
         /// Gets or sets include targets.
-        /// A collection of users or groups who are enabled to use the authentication method. Expanded by default.
+        /// A collection of groups that are enabled to use the authentication method. Expanded by default.
         /// </summary>
         [JsonPropertyName("includeTargets")]
         public IMicrosoftAuthenticatorAuthenticationMethodConfigurationIncludeTargetsCollectionPage IncludeTargets { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/PlannerPlan.cs b/src/Microsoft.Graph/Generated/model/PlannerPlan.cs
index ae8407db752..31dc07f23ae 100644
--- a/src/Microsoft.Graph/Generated/model/PlannerPlan.cs
+++ b/src/Microsoft.Graph/Generated/model/PlannerPlan.cs
@@ -22,7 +22,7 @@ public partial class PlannerPlan : Entity
     
         /// <summary>
         /// Gets or sets container.
-        /// Identifies the container of the plan. After it is set, this property can’t be updated. Required.
+        /// Identifies the container of the plan. Specify only the url, the containerId and type, or all properties. After it is set, this property can’t be updated. Required.
         /// </summary>
         [JsonPropertyName("container")]
         public PlannerPlanContainer Container { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/PlannerPlanContainer.cs b/src/Microsoft.Graph/Generated/model/PlannerPlanContainer.cs
index 1561a9ccff7..e4c9fdb6b5d 100644
--- a/src/Microsoft.Graph/Generated/model/PlannerPlanContainer.cs
+++ b/src/Microsoft.Graph/Generated/model/PlannerPlanContainer.cs
@@ -23,21 +23,21 @@ public partial class PlannerPlanContainer
 
         /// <summary>
         /// Gets or sets containerId.
-        /// The identifier of the resource that contains the plan.
+        /// The identifier of the resource that contains the plan. Optional.
         /// </summary>
         [JsonPropertyName("containerId")]
         public string ContainerId { get; set; }
     
         /// <summary>
         /// Gets or sets type.
-        /// The type of the resource that contains the plan. For supported types, see the previous table. Possible values are: group, unknownFutureValue, roster. Note that you must use the Prefer: include-unknown-enum-members request header to get the following value in this evolvable enum: roster.
+        /// The type of the resource that contains the plan. For supported types, see the previous table. Possible values are: group, unknownFutureValue, roster. Note that you must use the Prefer: include-unknown-enum-members request header to get the following value in this evolvable enum: roster. Optional.
         /// </summary>
         [JsonPropertyName("type")]
         public PlannerContainerType? Type { get; set; }
     
         /// <summary>
         /// Gets or sets url.
-        /// The full canonical URL of the container.
+        /// The full canonical URL of the container. Optional.
         /// </summary>
         [JsonPropertyName("url")]
         public string Url { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/Security.cs b/src/Microsoft.Graph/Generated/model/Security.cs
index 0c85ea8429d..8dd376df733 100644
--- a/src/Microsoft.Graph/Generated/model/Security.cs
+++ b/src/Microsoft.Graph/Generated/model/Security.cs
@@ -28,6 +28,7 @@ public partial class Security : Entity
     
         /// <summary>
         /// Gets or sets alerts_v2.
+        /// A collection of alerts in Microsoft 365 Defender.
         /// </summary>
         [JsonPropertyName("alerts_v2")]
         public ISecurityAlerts_v2CollectionPage Alerts_v2 { get; set; }
@@ -41,6 +42,7 @@ public partial class Security : Entity
     
         /// <summary>
         /// Gets or sets incidents.
+        /// A collection of incidents in Microsoft 365 Defender, each of which is a set of correlated alerts and associated metadata that reflects the story of an attack.
         /// </summary>
         [JsonPropertyName("incidents")]
         public ISecurityIncidentsCollectionPage Incidents { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/Subscription.cs b/src/Microsoft.Graph/Generated/model/Subscription.cs
index 1065c8492c8..4b9c945e042 100644
--- a/src/Microsoft.Graph/Generated/model/Subscription.cs
+++ b/src/Microsoft.Graph/Generated/model/Subscription.cs
@@ -85,14 +85,14 @@ public partial class Subscription : Entity
     
         /// <summary>
         /// Gets or sets lifecycle notification url.
-        /// Optional. The URL of the endpoint that receives lifecycle notifications, including subscriptionRemoved and missed notifications. This URL must make use of the HTTPS protocol.
+        /// Optional. The URL of the endpoint that receives lifecycle notifications, including subscriptionRemoved, reauthorizationRequired, and missed notifications. This URL must make use of the HTTPS protocol.
         /// </summary>
         [JsonPropertyName("lifecycleNotificationUrl")]
         public string LifecycleNotificationUrl { get; set; }
     
         /// <summary>
         /// Gets or sets notification query options.
-        /// Optional. OData query options for specifying value for the targeting resource. Clients receive notifications when resource reaches the state matching the query options provided here. With this new property in the subscription creation payload along with all existing properties, Webhooks will deliver notifications whenever a resource reaches the desired state mentioned in the notificationQueryOptions property. For example, when the print job is completed or when a print job resource isFetchable property value becomes true etc.
+        /// Optional. OData query options for specifying value for the targeting resource. Clients receive notifications when resource reaches the state matching the query options provided here. With this new property in the subscription creation payload along with all existing properties, Webhooks will deliver notifications whenever a resource reaches the desired state mentioned in the notificationQueryOptions property. For example, when the print job is completed or when a print job resource isFetchable property value becomes true etc.  Supported only for Universal Print Service. For more information, see Subscribe to change notifications from cloud printing APIs using Microsoft Graph.
         /// </summary>
         [JsonPropertyName("notificationQueryOptions")]
         public string NotificationQueryOptions { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/TemporaryAccessPassAuthenticationMethodConfiguration.cs b/src/Microsoft.Graph/Generated/model/TemporaryAccessPassAuthenticationMethodConfiguration.cs
index b2b6de37ccb..97107649d7a 100644
--- a/src/Microsoft.Graph/Generated/model/TemporaryAccessPassAuthenticationMethodConfiguration.cs
+++ b/src/Microsoft.Graph/Generated/model/TemporaryAccessPassAuthenticationMethodConfiguration.cs
@@ -65,7 +65,7 @@ public TemporaryAccessPassAuthenticationMethodConfiguration()
     
         /// <summary>
         /// Gets or sets include targets.
-        /// A collection of users or groups who are enabled to use the authentication method.
+        /// A collection of groups that are enabled to use the authentication method.
         /// </summary>
         [JsonPropertyName("includeTargets")]
         public ITemporaryAccessPassAuthenticationMethodConfigurationIncludeTargetsCollectionPage IncludeTargets { get; set; }
diff --git a/src/Microsoft.Graph/Generated/model/X509CertificateAuthenticationMethodConfiguration.cs b/src/Microsoft.Graph/Generated/model/X509CertificateAuthenticationMethodConfiguration.cs
index ad39d325c2f..9e780051a7e 100644
--- a/src/Microsoft.Graph/Generated/model/X509CertificateAuthenticationMethodConfiguration.cs
+++ b/src/Microsoft.Graph/Generated/model/X509CertificateAuthenticationMethodConfiguration.cs
@@ -44,7 +44,7 @@ public X509CertificateAuthenticationMethodConfiguration()
     
         /// <summary>
         /// Gets or sets include targets.
-        /// A collection of users or groups who are enabled to use the authentication method.
+        /// A collection of groups that are enabled to use the authentication method.
         /// </summary>
         [JsonPropertyName("includeTargets")]
         public IX509CertificateAuthenticationMethodConfigurationIncludeTargetsCollectionPage IncludeTargets { get; set; }
diff --git a/src/Microsoft.Graph/Generated/requests/ChatMessageRequestBuilder.cs b/src/Microsoft.Graph/Generated/requests/ChatMessageRequestBuilder.cs
index db21c2f3d1c..b6103aef2a1 100644
--- a/src/Microsoft.Graph/Generated/requests/ChatMessageRequestBuilder.cs
+++ b/src/Microsoft.Graph/Generated/requests/ChatMessageRequestBuilder.cs
@@ -74,7 +74,27 @@ public IChatMessageRepliesCollectionRequestBuilder Replies
             }
         }
     
-        
+        /// <summary>
+        /// Gets the request builder for ChatMessageSoftDelete.
+        /// </summary>
+        /// <returns>The <see cref="IChatMessageSoftDeleteRequestBuilder"/>.</returns>
+        public IChatMessageSoftDeleteRequestBuilder SoftDelete()
+        {
+            return new ChatMessageSoftDeleteRequestBuilder(
+                this.AppendSegmentToRequestUrl("microsoft.graph.softDelete"),
+                this.Client);
+        }
+
+        /// <summary>
+        /// Gets the request builder for ChatMessageUndoSoftDelete.
+        /// </summary>
+        /// <returns>The <see cref="IChatMessageUndoSoftDeleteRequestBuilder"/>.</returns>
+        public IChatMessageUndoSoftDeleteRequestBuilder UndoSoftDelete()
+        {
+            return new ChatMessageUndoSoftDeleteRequestBuilder(
+                this.AppendSegmentToRequestUrl("microsoft.graph.undoSoftDelete"),
+                this.Client);
+        }
     
     }
 }
diff --git a/src/Microsoft.Graph/Generated/requests/ChatMessageSoftDeleteRequest.cs b/src/Microsoft.Graph/Generated/requests/ChatMessageSoftDeleteRequest.cs
new file mode 100644
index 00000000000..5136b2757d5
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/ChatMessageSoftDeleteRequest.cs
@@ -0,0 +1,81 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: MethodRequest.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+    using System.Net.Http;
+    using System.Threading;
+
+    /// <summary>
+    /// The type ChatMessageSoftDeleteRequest.
+    /// </summary>
+    public partial class ChatMessageSoftDeleteRequest : BaseRequest, IChatMessageSoftDeleteRequest
+    {
+        /// <summary>
+        /// Constructs a new ChatMessageSoftDeleteRequest.
+        /// </summary>
+        public ChatMessageSoftDeleteRequest(
+            string requestUrl,
+            IBaseClient client,
+            IEnumerable<Option> options)
+            : base(requestUrl, client, options)
+        {
+        }
+
+        /// <summary>
+        /// Issues the POST request.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The task to await for async call.</returns>
+        public System.Threading.Tasks.Task PostAsync(
+            CancellationToken cancellationToken = default)
+        {
+            this.Method = HttpMethods.POST;
+            return this.SendAsync(null, cancellationToken);
+        }
+
+        /// <summary>
+        /// Issues the POST request and returns a <see cref="GraphResponse"/> object.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The <see cref="GraphResponse"/> object of the request</returns>
+        public System.Threading.Tasks.Task<GraphResponse> PostResponseAsync(CancellationToken cancellationToken = default)
+        {
+            this.Method = HttpMethods.POST;
+            return this.SendAsyncWithGraphResponse(null, cancellationToken);
+        }
+
+
+
+        /// <summary>
+        /// Adds the specified expand value to the request.
+        /// </summary>
+        /// <param name="value">The expand value.</param>
+        /// <returns>The request object to send.</returns>
+        public IChatMessageSoftDeleteRequest Expand(string value)
+        {
+            this.QueryOptions.Add(new QueryOption("$expand", value));
+            return this;
+        }
+
+        /// <summary>
+        /// Adds the specified select value to the request.
+        /// </summary>
+        /// <param name="value">The select value.</param>
+        /// <returns>The request object to send.</returns>
+        public IChatMessageSoftDeleteRequest Select(string value)
+        {
+            this.QueryOptions.Add(new QueryOption("$select", value));
+            return this;
+        }
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/ChatMessageSoftDeleteRequestBuilder.cs b/src/Microsoft.Graph/Generated/requests/ChatMessageSoftDeleteRequestBuilder.cs
new file mode 100644
index 00000000000..368459e178a
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/ChatMessageSoftDeleteRequestBuilder.cs
@@ -0,0 +1,46 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: MethodRequestBuilder.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+
+    /// <summary>
+    /// The type ChatMessageSoftDeleteRequestBuilder.
+    /// </summary>
+    public partial class ChatMessageSoftDeleteRequestBuilder : BaseActionMethodRequestBuilder<IChatMessageSoftDeleteRequest>, IChatMessageSoftDeleteRequestBuilder
+    {
+        /// <summary>
+        /// Constructs a new <see cref="ChatMessageSoftDeleteRequestBuilder"/>.
+        /// </summary>
+        /// <param name="requestUrl">The URL for the request.</param>
+        /// <param name="client">The <see cref="IBaseClient"/> for handling requests.</param>
+        public ChatMessageSoftDeleteRequestBuilder(
+            string requestUrl,
+            IBaseClient client)
+            : base(requestUrl, client)
+        {
+        }
+
+        /// <summary>
+        /// A method used by the base class to construct a request class instance.
+        /// </summary>
+        /// <param name="functionUrl">The request URL to </param>
+        /// <param name="options">The query and header options for the request.</param>
+        /// <returns>An instance of a specific request class.</returns>
+        protected override IChatMessageSoftDeleteRequest CreateRequest(string functionUrl, IEnumerable<Option> options)
+        {
+            var request = new ChatMessageSoftDeleteRequest(functionUrl, this.Client, options);
+
+            return request;
+        }
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/ChatMessageUndoSoftDeleteRequest.cs b/src/Microsoft.Graph/Generated/requests/ChatMessageUndoSoftDeleteRequest.cs
new file mode 100644
index 00000000000..a7ee86663e1
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/ChatMessageUndoSoftDeleteRequest.cs
@@ -0,0 +1,81 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: MethodRequest.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+    using System.Net.Http;
+    using System.Threading;
+
+    /// <summary>
+    /// The type ChatMessageUndoSoftDeleteRequest.
+    /// </summary>
+    public partial class ChatMessageUndoSoftDeleteRequest : BaseRequest, IChatMessageUndoSoftDeleteRequest
+    {
+        /// <summary>
+        /// Constructs a new ChatMessageUndoSoftDeleteRequest.
+        /// </summary>
+        public ChatMessageUndoSoftDeleteRequest(
+            string requestUrl,
+            IBaseClient client,
+            IEnumerable<Option> options)
+            : base(requestUrl, client, options)
+        {
+        }
+
+        /// <summary>
+        /// Issues the POST request.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The task to await for async call.</returns>
+        public System.Threading.Tasks.Task PostAsync(
+            CancellationToken cancellationToken = default)
+        {
+            this.Method = HttpMethods.POST;
+            return this.SendAsync(null, cancellationToken);
+        }
+
+        /// <summary>
+        /// Issues the POST request and returns a <see cref="GraphResponse"/> object.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The <see cref="GraphResponse"/> object of the request</returns>
+        public System.Threading.Tasks.Task<GraphResponse> PostResponseAsync(CancellationToken cancellationToken = default)
+        {
+            this.Method = HttpMethods.POST;
+            return this.SendAsyncWithGraphResponse(null, cancellationToken);
+        }
+
+
+
+        /// <summary>
+        /// Adds the specified expand value to the request.
+        /// </summary>
+        /// <param name="value">The expand value.</param>
+        /// <returns>The request object to send.</returns>
+        public IChatMessageUndoSoftDeleteRequest Expand(string value)
+        {
+            this.QueryOptions.Add(new QueryOption("$expand", value));
+            return this;
+        }
+
+        /// <summary>
+        /// Adds the specified select value to the request.
+        /// </summary>
+        /// <param name="value">The select value.</param>
+        /// <returns>The request object to send.</returns>
+        public IChatMessageUndoSoftDeleteRequest Select(string value)
+        {
+            this.QueryOptions.Add(new QueryOption("$select", value));
+            return this;
+        }
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/ChatMessageUndoSoftDeleteRequestBuilder.cs b/src/Microsoft.Graph/Generated/requests/ChatMessageUndoSoftDeleteRequestBuilder.cs
new file mode 100644
index 00000000000..65a32f9114e
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/ChatMessageUndoSoftDeleteRequestBuilder.cs
@@ -0,0 +1,46 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: MethodRequestBuilder.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+
+    /// <summary>
+    /// The type ChatMessageUndoSoftDeleteRequestBuilder.
+    /// </summary>
+    public partial class ChatMessageUndoSoftDeleteRequestBuilder : BaseActionMethodRequestBuilder<IChatMessageUndoSoftDeleteRequest>, IChatMessageUndoSoftDeleteRequestBuilder
+    {
+        /// <summary>
+        /// Constructs a new <see cref="ChatMessageUndoSoftDeleteRequestBuilder"/>.
+        /// </summary>
+        /// <param name="requestUrl">The URL for the request.</param>
+        /// <param name="client">The <see cref="IBaseClient"/> for handling requests.</param>
+        public ChatMessageUndoSoftDeleteRequestBuilder(
+            string requestUrl,
+            IBaseClient client)
+            : base(requestUrl, client)
+        {
+        }
+
+        /// <summary>
+        /// A method used by the base class to construct a request class instance.
+        /// </summary>
+        /// <param name="functionUrl">The request URL to </param>
+        /// <param name="options">The query and header options for the request.</param>
+        /// <returns>An instance of a specific request class.</returns>
+        protected override IChatMessageUndoSoftDeleteRequest CreateRequest(string functionUrl, IEnumerable<Option> options)
+        {
+            var request = new ChatMessageUndoSoftDeleteRequest(functionUrl, this.Client, options);
+
+            return request;
+        }
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/IChatMessageRequestBuilder.cs b/src/Microsoft.Graph/Generated/requests/IChatMessageRequestBuilder.cs
index 1458c8c82eb..26673d755b9 100644
--- a/src/Microsoft.Graph/Generated/requests/IChatMessageRequestBuilder.cs
+++ b/src/Microsoft.Graph/Generated/requests/IChatMessageRequestBuilder.cs
@@ -43,7 +43,17 @@ public partial interface IChatMessageRequestBuilder : IEntityRequestBuilder
         /// <returns>The <see cref="IChatMessageRepliesCollectionRequestBuilder"/>.</returns>
         IChatMessageRepliesCollectionRequestBuilder Replies { get; }
     
-        
+        /// <summary>
+        /// Gets the request builder for ChatMessageSoftDelete.
+        /// </summary>
+        /// <returns>The <see cref="IChatMessageSoftDeleteRequestBuilder"/>.</returns>
+        IChatMessageSoftDeleteRequestBuilder SoftDelete();
+
+        /// <summary>
+        /// Gets the request builder for ChatMessageUndoSoftDelete.
+        /// </summary>
+        /// <returns>The <see cref="IChatMessageUndoSoftDeleteRequestBuilder"/>.</returns>
+        IChatMessageUndoSoftDeleteRequestBuilder UndoSoftDelete();
     
     }
 }
diff --git a/src/Microsoft.Graph/Generated/requests/IChatMessageSoftDeleteRequest.cs b/src/Microsoft.Graph/Generated/requests/IChatMessageSoftDeleteRequest.cs
new file mode 100644
index 00000000000..21f00323567
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/IChatMessageSoftDeleteRequest.cs
@@ -0,0 +1,56 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: IMethodRequest.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+    using System.Net.Http;
+    using System.Threading;
+
+    /// <summary>
+    /// The interface IChatMessageSoftDeleteRequest.
+    /// </summary>
+    public partial interface IChatMessageSoftDeleteRequest : IBaseRequest
+    {
+
+
+        /// <summary>
+        /// Issues the POST request.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The task to await for async call.</returns>
+        System.Threading.Tasks.Task PostAsync(
+            CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// Issues the POST request and returns a <see cref="GraphResponse"/> object.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The <see cref="GraphResponse"/> object of the request</returns>
+        System.Threading.Tasks.Task<GraphResponse> PostResponseAsync(CancellationToken cancellationToken = default);
+
+
+
+        /// <summary>
+        /// Adds the specified expand value to the request.
+        /// </summary>
+        /// <param name="value">The expand value.</param>
+        /// <returns>The request object to send.</returns>
+        IChatMessageSoftDeleteRequest Expand(string value);
+
+        /// <summary>
+        /// Adds the specified select value to the request.
+        /// </summary>
+        /// <param name="value">The select value.</param>
+        /// <returns>The request object to send.</returns>
+        IChatMessageSoftDeleteRequest Select(string value);
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/IChatMessageSoftDeleteRequestBuilder.cs b/src/Microsoft.Graph/Generated/requests/IChatMessageSoftDeleteRequestBuilder.cs
new file mode 100644
index 00000000000..2dd3bdc8dd1
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/IChatMessageSoftDeleteRequestBuilder.cs
@@ -0,0 +1,28 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: IMethodRequestBuilder.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+
+    /// <summary>
+    /// The interface IChatMessageSoftDeleteRequestBuilder.
+    /// </summary>
+    public partial interface IChatMessageSoftDeleteRequestBuilder : IBaseRequestBuilder
+    {
+        /// <summary>
+        /// Builds the request.
+        /// </summary>
+        /// <param name="options">The query and header options for the request.</param>
+        /// <returns>The built request.</returns>
+        IChatMessageSoftDeleteRequest Request(IEnumerable<Option> options = null);
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/IChatMessageUndoSoftDeleteRequest.cs b/src/Microsoft.Graph/Generated/requests/IChatMessageUndoSoftDeleteRequest.cs
new file mode 100644
index 00000000000..3df8dcefce9
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/IChatMessageUndoSoftDeleteRequest.cs
@@ -0,0 +1,56 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: IMethodRequest.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+    using System.Net.Http;
+    using System.Threading;
+
+    /// <summary>
+    /// The interface IChatMessageUndoSoftDeleteRequest.
+    /// </summary>
+    public partial interface IChatMessageUndoSoftDeleteRequest : IBaseRequest
+    {
+
+
+        /// <summary>
+        /// Issues the POST request.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The task to await for async call.</returns>
+        System.Threading.Tasks.Task PostAsync(
+            CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// Issues the POST request and returns a <see cref="GraphResponse"/> object.
+        /// </summary>
+        /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
+        /// <returns>The <see cref="GraphResponse"/> object of the request</returns>
+        System.Threading.Tasks.Task<GraphResponse> PostResponseAsync(CancellationToken cancellationToken = default);
+
+
+
+        /// <summary>
+        /// Adds the specified expand value to the request.
+        /// </summary>
+        /// <param name="value">The expand value.</param>
+        /// <returns>The request object to send.</returns>
+        IChatMessageUndoSoftDeleteRequest Expand(string value);
+
+        /// <summary>
+        /// Adds the specified select value to the request.
+        /// </summary>
+        /// <param name="value">The select value.</param>
+        /// <returns>The request object to send.</returns>
+        IChatMessageUndoSoftDeleteRequest Select(string value);
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/requests/IChatMessageUndoSoftDeleteRequestBuilder.cs b/src/Microsoft.Graph/Generated/requests/IChatMessageUndoSoftDeleteRequestBuilder.cs
new file mode 100644
index 00000000000..383692e360a
--- /dev/null
+++ b/src/Microsoft.Graph/Generated/requests/IChatMessageUndoSoftDeleteRequestBuilder.cs
@@ -0,0 +1,28 @@
+// ------------------------------------------------------------------------------
+//  Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.  See License in the project root for license information.
+// ------------------------------------------------------------------------------
+
+// **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
+
+// Template Source: IMethodRequestBuilder.cs.tt
+
+namespace Microsoft.Graph
+{
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+
+    /// <summary>
+    /// The interface IChatMessageUndoSoftDeleteRequestBuilder.
+    /// </summary>
+    public partial interface IChatMessageUndoSoftDeleteRequestBuilder : IBaseRequestBuilder
+    {
+        /// <summary>
+        /// Builds the request.
+        /// </summary>
+        /// <param name="options">The query and header options for the request.</param>
+        /// <returns>The built request.</returns>
+        IChatMessageUndoSoftDeleteRequest Request(IEnumerable<Option> options = null);
+    }
+}
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/Alert.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/Alert.cs
index cbd27d44d64..f7d32406239 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/Alert.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/Alert.cs
@@ -23,168 +23,196 @@ public partial class Alert : Microsoft.Graph.Entity
     
         /// <summary>
         /// Gets or sets actor display name.
+        /// The adversary or activity group that is associated with this alert.
         /// </summary>
         [JsonPropertyName("actorDisplayName")]
         public string ActorDisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets alert web url.
+        /// URL for the alert page in the Microsoft 365 Defender portal.
         /// </summary>
         [JsonPropertyName("alertWebUrl")]
         public string AlertWebUrl { get; set; }
     
         /// <summary>
         /// Gets or sets assigned to.
+        /// Owner of the alert, or null if no owner is assigned.
         /// </summary>
         [JsonPropertyName("assignedTo")]
         public string AssignedTo { get; set; }
     
         /// <summary>
         /// Gets or sets category.
+        /// The attack kill-chain category that the alert belongs to. Aligned with the MITRE ATT&amp;CK framework.
         /// </summary>
         [JsonPropertyName("category")]
         public string Category { get; set; }
     
         /// <summary>
         /// Gets or sets classification.
+        /// Specifies whether the alert represents a true threat. Possible values are: unknown, falsePositive, truePositive, benignPositive, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("classification")]
         public AlertClassification? Classification { get; set; }
     
         /// <summary>
         /// Gets or sets comments.
+        /// Array of comments created by the Security Operations (SecOps) team during the alert management process.
         /// </summary>
         [JsonPropertyName("comments")]
         public IEnumerable<AlertComment> Comments { get; set; }
     
         /// <summary>
         /// Gets or sets created date time.
+        /// Time when Microsoft 365 Defender created the alert.
         /// </summary>
         [JsonPropertyName("createdDateTime")]
         public DateTimeOffset? CreatedDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets description.
+        /// String value describing each alert.
         /// </summary>
         [JsonPropertyName("description")]
         public string Description { get; set; }
     
         /// <summary>
         /// Gets or sets detection source.
+        /// Detection technology or sensor that identified the notable component or activity.
         /// </summary>
         [JsonPropertyName("detectionSource")]
         public DetectionSource? DetectionSource { get; set; }
     
         /// <summary>
         /// Gets or sets detector id.
+        /// The ID of the detector that triggered the alert.
         /// </summary>
         [JsonPropertyName("detectorId")]
         public string DetectorId { get; set; }
     
         /// <summary>
         /// Gets or sets determination.
+        /// Specifies the result of the investigation, whether the alert represents a true attack and if so, the nature of the attack. Possible values are: unknown, apt, malware, securityPersonnel, securityTesting, unwantedSoftware, other, multiStagedAttack, compromisedUser, phishing, maliciousUserActivity, clean, insufficientData, confirmedUserActivity, lineOfBusinessApplication, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("determination")]
         public AlertDetermination? Determination { get; set; }
     
         /// <summary>
         /// Gets or sets evidence.
+        /// Collection of evidence related to the alert.
         /// </summary>
         [JsonPropertyName("evidence")]
         public IEnumerable<AlertEvidence> Evidence { get; set; }
     
         /// <summary>
         /// Gets or sets first activity date time.
+        /// The earliest activity associated with the alert.
         /// </summary>
         [JsonPropertyName("firstActivityDateTime")]
         public DateTimeOffset? FirstActivityDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets incident id.
+        /// Unique identifier to represent the incident this alert resource is associated with.
         /// </summary>
         [JsonPropertyName("incidentId")]
         public string IncidentId { get; set; }
     
         /// <summary>
         /// Gets or sets incident web url.
+        /// URL for the incident page in the Microsoft 365 Defender portal.
         /// </summary>
         [JsonPropertyName("incidentWebUrl")]
         public string IncidentWebUrl { get; set; }
     
         /// <summary>
         /// Gets or sets last activity date time.
+        /// The oldest activity associated with the alert.
         /// </summary>
         [JsonPropertyName("lastActivityDateTime")]
         public DateTimeOffset? LastActivityDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets last update date time.
+        /// Time when the alert was last updated at Microsoft 365 Defender.
         /// </summary>
         [JsonPropertyName("lastUpdateDateTime")]
         public DateTimeOffset? LastUpdateDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets mitre techniques.
+        /// The attack techniques, as aligned with the MITRE ATT&amp;CK framework.
         /// </summary>
         [JsonPropertyName("mitreTechniques")]
         public IEnumerable<string> MitreTechniques { get; set; }
     
         /// <summary>
         /// Gets or sets provider alert id.
+        /// The ID of the alert as it appears in the security provider product that generated the alert.
         /// </summary>
         [JsonPropertyName("providerAlertId")]
         public string ProviderAlertId { get; set; }
     
         /// <summary>
         /// Gets or sets recommended actions.
+        /// Recommended response and remediation actions to take in the event this alert was generated.
         /// </summary>
         [JsonPropertyName("recommendedActions")]
         public string RecommendedActions { get; set; }
     
         /// <summary>
         /// Gets or sets resolved date time.
+        /// Time when the alert was resolved.
         /// </summary>
         [JsonPropertyName("resolvedDateTime")]
         public DateTimeOffset? ResolvedDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets service source.
+        /// The service or product that created this alert. Possible values are: microsoftDefenderForEndpoint, microsoftDefenderForIdentity, microsoftCloudAppSecurity, microsoftDefenderForOffice365, microsoft365Defender, aadIdentityProtection, appGovernance, dataLossPrevention.
         /// </summary>
         [JsonPropertyName("serviceSource")]
         public ServiceSource? ServiceSource { get; set; }
     
         /// <summary>
         /// Gets or sets severity.
+        /// Indicates the possible impact on assets. The higher the severity the bigger the impact. Typically higher severity items require the most immediate attention. Possible values are: unknown, informational, low, medium, high, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("severity")]
         public AlertSeverity? Severity { get; set; }
     
         /// <summary>
         /// Gets or sets status.
+        /// The status of the alert. Possible values are: new, inProgress, resolved, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("status")]
         public AlertStatus? Status { get; set; }
     
         /// <summary>
         /// Gets or sets tenant id.
+        /// The Azure Active Directory tenant the alert was created in.
         /// </summary>
         [JsonPropertyName("tenantId")]
         public string TenantId { get; set; }
     
         /// <summary>
         /// Gets or sets threat display name.
+        /// The threat associated with this alert.
         /// </summary>
         [JsonPropertyName("threatDisplayName")]
         public string ThreatDisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets threat family name.
+        /// Threat family associated with this alert.
         /// </summary>
         [JsonPropertyName("threatFamilyName")]
         public string ThreatFamilyName { get; set; }
     
         /// <summary>
         /// Gets or sets title.
+        /// Brief identifying string value describing the alert.
         /// </summary>
         [JsonPropertyName("title")]
         public string Title { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/AlertComment.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/AlertComment.cs
index 9ed9199b3a2..986e8539d68 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/AlertComment.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/AlertComment.cs
@@ -23,18 +23,21 @@ public partial class AlertComment
 
         /// <summary>
         /// Gets or sets comment.
+        /// The comment text.
         /// </summary>
         [JsonPropertyName("comment")]
         public string Comment { get; set; }
     
         /// <summary>
         /// Gets or sets createdByDisplayName.
+        /// The person or app name that submitted the comment.
         /// </summary>
         [JsonPropertyName("createdByDisplayName")]
         public string CreatedByDisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets createdDateTime.
+        /// The time when the comment was submitted.
         /// </summary>
         [JsonPropertyName("createdDateTime")]
         public DateTimeOffset? CreatedDateTime { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/AlertEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/AlertEvidence.cs
index 768f90fbe09..90ed001841e 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/AlertEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/AlertEvidence.cs
@@ -23,36 +23,42 @@ public partial class AlertEvidence
 
         /// <summary>
         /// Gets or sets createdDateTime.
+        /// The time the evidence was created and added to the alert.
         /// </summary>
         [JsonPropertyName("createdDateTime")]
         public DateTimeOffset? CreatedDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets remediationStatus.
+        /// Status of the remediation action taken. The possible values are: none, remediated, prevented, blocked, notFound, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("remediationStatus")]
         public EvidenceRemediationStatus? RemediationStatus { get; set; }
     
         /// <summary>
         /// Gets or sets remediationStatusDetails.
+        /// Details about the remediation status.
         /// </summary>
         [JsonPropertyName("remediationStatusDetails")]
         public string RemediationStatusDetails { get; set; }
     
         /// <summary>
         /// Gets or sets roles.
+        /// The role/s that an evidence entity represents in an alert, e.g., an IP address that is associated with an attacker will have the evidence role 'Attacker'.
         /// </summary>
         [JsonPropertyName("roles")]
         public IEnumerable<EvidenceRole> Roles { get; set; }
     
         /// <summary>
         /// Gets or sets tags.
+        /// Array of custom tags associated with an evidence instance, for example to denote a group of devices, high value assets, etc.
         /// </summary>
         [JsonPropertyName("tags")]
         public IEnumerable<string> Tags { get; set; }
     
         /// <summary>
         /// Gets or sets verdict.
+        /// The decision reached by automated investigation. The possible values are: unknown, suspicious, malicious, noThreatsFound, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("verdict")]
         public EvidenceVerdict? Verdict { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/AnalyzedMessageEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/AnalyzedMessageEvidence.cs
index a02929eadd4..220d164946f 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/AnalyzedMessageEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/AnalyzedMessageEvidence.cs
@@ -29,108 +29,126 @@ public AnalyzedMessageEvidence()
 
         /// <summary>
         /// Gets or sets antiSpamDirection.
+        /// Direction of the email relative to your network. The possible values are: inbound, outbound or intraorg.
         /// </summary>
         [JsonPropertyName("antiSpamDirection")]
         public string AntiSpamDirection { get; set; }
     
         /// <summary>
         /// Gets or sets attachmentsCount.
+        /// Number of attachments in the email.
         /// </summary>
         [JsonPropertyName("attachmentsCount")]
         public Int64? AttachmentsCount { get; set; }
     
         /// <summary>
         /// Gets or sets deliveryAction.
+        /// Delivery action of the email. The possible values are: delivered, deliveredAsSpam, junked, blocked, or replaced.
         /// </summary>
         [JsonPropertyName("deliveryAction")]
         public string DeliveryAction { get; set; }
     
         /// <summary>
         /// Gets or sets deliveryLocation.
+        /// Location where the email was delivered. The possible values are: inbox, external, junkFolder, quarantine, failed, dropped, deletedFolder or forwarded.
         /// </summary>
         [JsonPropertyName("deliveryLocation")]
         public string DeliveryLocation { get; set; }
     
         /// <summary>
         /// Gets or sets internetMessageId.
+        /// Public-facing identifier for the email that is set by the sending email system.
         /// </summary>
         [JsonPropertyName("internetMessageId")]
         public string InternetMessageId { get; set; }
     
         /// <summary>
         /// Gets or sets language.
+        /// Detected language of the email content.
         /// </summary>
         [JsonPropertyName("language")]
         public string Language { get; set; }
     
         /// <summary>
         /// Gets or sets networkMessageId.
+        /// Unique identifier for the email, generated by Microsoft 365.
         /// </summary>
         [JsonPropertyName("networkMessageId")]
         public string NetworkMessageId { get; set; }
     
         /// <summary>
         /// Gets or sets p1Sender.
+        /// The P1 sender.
         /// </summary>
         [JsonPropertyName("p1Sender")]
         public EmailSender P1Sender { get; set; }
     
         /// <summary>
         /// Gets or sets p2Sender.
+        /// The P2 sender.
         /// </summary>
         [JsonPropertyName("p2Sender")]
         public EmailSender P2Sender { get; set; }
     
         /// <summary>
         /// Gets or sets receivedDateTime.
+        /// Date and time when the email was received.
         /// </summary>
         [JsonPropertyName("receivedDateTime")]
         public DateTimeOffset? ReceivedDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets recipientEmailAddress.
+        /// Email address of the recipient, or email address of the recipient after distribution list expansion.
         /// </summary>
         [JsonPropertyName("recipientEmailAddress")]
         public string RecipientEmailAddress { get; set; }
     
         /// <summary>
         /// Gets or sets senderIp.
+        /// IP address of the last detected mail server that relayed the message.
         /// </summary>
         [JsonPropertyName("senderIp")]
         public string SenderIp { get; set; }
     
         /// <summary>
         /// Gets or sets subject.
+        /// Subject of the email.
         /// </summary>
         [JsonPropertyName("subject")]
         public string Subject { get; set; }
     
         /// <summary>
         /// Gets or sets threatDetectionMethods.
+        /// Collection of methods used to detect malware, phishing, or other threats found in the email.
         /// </summary>
         [JsonPropertyName("threatDetectionMethods")]
         public IEnumerable<string> ThreatDetectionMethods { get; set; }
     
         /// <summary>
         /// Gets or sets threats.
+        /// Collection of detection names for malware or other threats found.
         /// </summary>
         [JsonPropertyName("threats")]
         public IEnumerable<string> Threats { get; set; }
     
         /// <summary>
         /// Gets or sets urlCount.
+        /// Number of embedded URLs in the email.
         /// </summary>
         [JsonPropertyName("urlCount")]
         public Int64? UrlCount { get; set; }
     
         /// <summary>
         /// Gets or sets urls.
+        /// Collection of the URLs contained in this email.
         /// </summary>
         [JsonPropertyName("urls")]
         public IEnumerable<string> Urls { get; set; }
     
         /// <summary>
         /// Gets or sets urn.
+        /// Uniform resource name (URN) of the automated investigation where the cluster was identified.
         /// </summary>
         [JsonPropertyName("urn")]
         public string Urn { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/CloudApplicationEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/CloudApplicationEvidence.cs
index 6c5ba6b1e00..6a37051c8cb 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/CloudApplicationEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/CloudApplicationEvidence.cs
@@ -29,30 +29,35 @@ public CloudApplicationEvidence()
 
         /// <summary>
         /// Gets or sets appId.
+        /// Unique identifier of the application.
         /// </summary>
         [JsonPropertyName("appId")]
         public Int64? AppId { get; set; }
     
         /// <summary>
         /// Gets or sets displayName.
+        /// Name of the application.
         /// </summary>
         [JsonPropertyName("displayName")]
         public string DisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets instanceId.
+        /// Identifier of the instance of the Software as a Service (SaaS) application.
         /// </summary>
         [JsonPropertyName("instanceId")]
         public Int64? InstanceId { get; set; }
     
         /// <summary>
         /// Gets or sets instanceName.
+        /// Name of the instance of the SaaS application.
         /// </summary>
         [JsonPropertyName("instanceName")]
         public string InstanceName { get; set; }
     
         /// <summary>
         /// Gets or sets saasAppId.
+        /// The identifier of the SaaS application.
         /// </summary>
         [JsonPropertyName("saasAppId")]
         public Int64? SaasAppId { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/DeviceEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/DeviceEvidence.cs
index 24ec1bc58f1..4f415f1e838 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/DeviceEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/DeviceEvidence.cs
@@ -30,90 +30,105 @@ public DeviceEvidence()
 
         /// <summary>
         /// Gets or sets azureAdDeviceId.
+        /// A unique identifier assigned to a device by Azure Active Directory (Azure AD) when device is Azure AD-joined.
         /// </summary>
         [JsonPropertyName("azureAdDeviceId")]
         public string AzureAdDeviceId { get; set; }
     
         /// <summary>
         /// Gets or sets defenderAvStatus.
+        /// State of the Defender AntiMalware engine. The possible values are: notReporting, disabled, notUpdated, updated, unknown, notSupported, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("defenderAvStatus")]
         public DefenderAvStatus? DefenderAvStatus { get; set; }
     
         /// <summary>
         /// Gets or sets deviceDnsName.
+        /// The fully qualified domain name (FQDN) for the device.
         /// </summary>
         [JsonPropertyName("deviceDnsName")]
         public string DeviceDnsName { get; set; }
     
         /// <summary>
         /// Gets or sets firstSeenDateTime.
+        /// The date and time when the device was first seen.
         /// </summary>
         [JsonPropertyName("firstSeenDateTime")]
         public DateTimeOffset? FirstSeenDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets healthStatus.
+        /// The health state of the device.The possible values are: active, inactive, impairedCommunication, noSensorData, noSensorDataImpairedCommunication, unknown, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("healthStatus")]
         public DeviceHealthStatus? HealthStatus { get; set; }
     
         /// <summary>
         /// Gets or sets loggedOnUsers.
+        /// Users that were logged on the machine during the time of the alert.
         /// </summary>
         [JsonPropertyName("loggedOnUsers")]
         public IEnumerable<LoggedOnUser> LoggedOnUsers { get; set; }
     
         /// <summary>
         /// Gets or sets mdeDeviceId.
+        /// A unique identifier assigned to a device by Microsoft Defender for Endpoint.
         /// </summary>
         [JsonPropertyName("mdeDeviceId")]
         public string MdeDeviceId { get; set; }
     
         /// <summary>
         /// Gets or sets onboardingStatus.
+        /// The status of the machine onboarding to Microsoft Defender for Endpoint.The possible values are: insufficientInfo, onboarded, canBeOnboarded, unsupported, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("onboardingStatus")]
         public OnboardingStatus? OnboardingStatus { get; set; }
     
         /// <summary>
         /// Gets or sets osBuild.
+        /// The build version for the operating system the device is running.
         /// </summary>
         [JsonPropertyName("osBuild")]
         public Int64? OsBuild { get; set; }
     
         /// <summary>
         /// Gets or sets osPlatform.
+        /// The operating system platform the device is running.
         /// </summary>
         [JsonPropertyName("osPlatform")]
         public string OsPlatform { get; set; }
     
         /// <summary>
         /// Gets or sets rbacGroupId.
+        /// The ID of the role-based access control (RBAC) device group.
         /// </summary>
         [JsonPropertyName("rbacGroupId")]
         public Int32? RbacGroupId { get; set; }
     
         /// <summary>
         /// Gets or sets rbacGroupName.
+        /// The name of the RBAC device group.
         /// </summary>
         [JsonPropertyName("rbacGroupName")]
         public string RbacGroupName { get; set; }
     
         /// <summary>
         /// Gets or sets riskScore.
+        /// Risk score as evaluated by Microsoft Defender for Endpoint. The possible values are: none, informational, low, medium, high, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("riskScore")]
         public DeviceRiskScore? RiskScore { get; set; }
     
         /// <summary>
         /// Gets or sets version.
+        /// The version of the operating system platform.
         /// </summary>
         [JsonPropertyName("version")]
         public string Version { get; set; }
     
         /// <summary>
         /// Gets or sets vmMetadata.
+        /// Metadata of the virtual machine (VM) on which Microsoft Defender for Endpoint is running.
         /// </summary>
         [JsonPropertyName("vmMetadata")]
         public VmMetadata VmMetadata { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/EmailSender.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/EmailSender.cs
index 9bb43f04972..c6abc1b66f9 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/EmailSender.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/EmailSender.cs
@@ -23,18 +23,21 @@ public partial class EmailSender
 
         /// <summary>
         /// Gets or sets displayName.
+        /// The name of the sender.
         /// </summary>
         [JsonPropertyName("displayName")]
         public string DisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets domainName.
+        /// Sender domain.
         /// </summary>
         [JsonPropertyName("domainName")]
         public string DomainName { get; set; }
     
         /// <summary>
         /// Gets or sets emailAddress.
+        /// Sender email address.
         /// </summary>
         [JsonPropertyName("emailAddress")]
         public string EmailAddress { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/FileDetails.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/FileDetails.cs
index 5179aafec4f..598d80b5b3b 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/FileDetails.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/FileDetails.cs
@@ -23,48 +23,56 @@ public partial class FileDetails
 
         /// <summary>
         /// Gets or sets fileName.
+        /// The name of the file.
         /// </summary>
         [JsonPropertyName("fileName")]
         public string FileName { get; set; }
     
         /// <summary>
         /// Gets or sets filePath.
+        /// The file path (location) of the file instance.
         /// </summary>
         [JsonPropertyName("filePath")]
         public string FilePath { get; set; }
     
         /// <summary>
         /// Gets or sets filePublisher.
+        /// The publisher of the file.
         /// </summary>
         [JsonPropertyName("filePublisher")]
         public string FilePublisher { get; set; }
     
         /// <summary>
         /// Gets or sets fileSize.
+        /// The size of the file in bytes.
         /// </summary>
         [JsonPropertyName("fileSize")]
         public Int64? FileSize { get; set; }
     
         /// <summary>
         /// Gets or sets issuer.
+        /// The certificate authority (CA) that issued the certificate.
         /// </summary>
         [JsonPropertyName("issuer")]
         public string Issuer { get; set; }
     
         /// <summary>
         /// Gets or sets sha1.
+        /// The Sha1 cryptographic hash of the file content.
         /// </summary>
         [JsonPropertyName("sha1")]
         public string Sha1 { get; set; }
     
         /// <summary>
         /// Gets or sets sha256.
+        /// The Sha256 cryptographic hash of the file content.
         /// </summary>
         [JsonPropertyName("sha256")]
         public string Sha256 { get; set; }
     
         /// <summary>
         /// Gets or sets signer.
+        /// The signer of the signed file.
         /// </summary>
         [JsonPropertyName("signer")]
         public string Signer { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/FileEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/FileEvidence.cs
index 9f0b39b334e..07d4b5ed00c 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/FileEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/FileEvidence.cs
@@ -30,18 +30,21 @@ public FileEvidence()
 
         /// <summary>
         /// Gets or sets detectionStatus.
+        /// The status of the detection.The possible values are: detected, blocked, prevented, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("detectionStatus")]
         public DetectionStatus? DetectionStatus { get; set; }
     
         /// <summary>
         /// Gets or sets fileDetails.
+        /// The file details.
         /// </summary>
         [JsonPropertyName("fileDetails")]
         public FileDetails FileDetails { get; set; }
     
         /// <summary>
         /// Gets or sets mdeDeviceId.
+        /// A unique identifier assigned to a device by Microsoft Defender for Endpoint.
         /// </summary>
         [JsonPropertyName("mdeDeviceId")]
         public string MdeDeviceId { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/HuntingQueryResults.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/HuntingQueryResults.cs
index 5c29382e53f..e088c6d25e1 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/HuntingQueryResults.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/HuntingQueryResults.cs
@@ -23,12 +23,14 @@ public partial class HuntingQueryResults
 
         /// <summary>
         /// Gets or sets results.
+        /// The results of the hunting query.
         /// </summary>
         [JsonPropertyName("results")]
         public IEnumerable<HuntingRowResult> Results { get; set; }
     
         /// <summary>
         /// Gets or sets schema.
+        /// The schema for the response.
         /// </summary>
         [JsonPropertyName("schema")]
         public IEnumerable<SinglePropertySchema> Schema { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/Incident.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/Incident.cs
index 443150c3924..e4310c68bcf 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/Incident.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/Incident.cs
@@ -23,84 +23,98 @@ public partial class Incident : Microsoft.Graph.Entity
     
         /// <summary>
         /// Gets or sets assigned to.
+        /// Owner of the incident, or null if no owner is assigned. Free editable text.
         /// </summary>
         [JsonPropertyName("assignedTo")]
         public string AssignedTo { get; set; }
     
         /// <summary>
         /// Gets or sets classification.
+        /// The specification for the incident. Possible values are: unknown, falsePositive, truePositive, informationalExpectedActivity, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("classification")]
         public AlertClassification? Classification { get; set; }
     
         /// <summary>
         /// Gets or sets comments.
+        /// Array of comments created by the Security Operations (SecOps) team when the incident is managed.
         /// </summary>
         [JsonPropertyName("comments")]
         public IEnumerable<AlertComment> Comments { get; set; }
     
         /// <summary>
         /// Gets or sets created date time.
+        /// Time when the incident was first created.
         /// </summary>
         [JsonPropertyName("createdDateTime")]
         public DateTimeOffset? CreatedDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets custom tags.
+        /// Array of custom tags associated with an incident.
         /// </summary>
         [JsonPropertyName("customTags")]
         public IEnumerable<string> CustomTags { get; set; }
     
         /// <summary>
         /// Gets or sets determination.
+        /// Specifies the determination of the incident. Possible values are: unknown, apt, malware, securityPersonnel, securityTesting, unwantedSoftware, other, multiStagedAttack, compromisedUser, phishing, maliciousUserActivity, clean, insufficientData, confirmedUserActivity, lineOfBusinessApplication, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("determination")]
         public AlertDetermination? Determination { get; set; }
     
         /// <summary>
         /// Gets or sets display name.
+        /// The incident name.
         /// </summary>
         [JsonPropertyName("displayName")]
         public string DisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets incident web url.
+        /// The URL for the incident page in the Microsoft 365 Defender portal.
         /// </summary>
         [JsonPropertyName("incidentWebUrl")]
         public string IncidentWebUrl { get; set; }
     
         /// <summary>
         /// Gets or sets last update date time.
+        /// Time when the incident was last updated.
         /// </summary>
         [JsonPropertyName("lastUpdateDateTime")]
         public DateTimeOffset? LastUpdateDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets redirect incident id.
+        /// Only populated in case an incident is grouped together with another incident, as part of the logic that processes incidents. In such a case, the status property is redirected.
         /// </summary>
         [JsonPropertyName("redirectIncidentId")]
         public string RedirectIncidentId { get; set; }
     
         /// <summary>
         /// Gets or sets severity.
+        /// Indicates the possible impact on assets. The higher the severity, the bigger the impact. Typically higher severity items require the most immediate attention. Possible values are: unknown, informational, low, medium, high, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("severity")]
         public AlertSeverity? Severity { get; set; }
     
         /// <summary>
         /// Gets or sets status.
+        /// The status of the incident. Possible values are: active, resolved, redirected, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("status")]
         public IncidentStatus? Status { get; set; }
     
         /// <summary>
         /// Gets or sets tenant id.
+        /// The Azure Active Directory tenant in which the alert was created.
         /// </summary>
         [JsonPropertyName("tenantId")]
         public string TenantId { get; set; }
     
         /// <summary>
         /// Gets or sets alerts.
+        /// The list of related alerts. Supports $expand.
         /// </summary>
         [JsonPropertyName("alerts")]
         public IIncidentAlertsCollectionWithReferencesPage Alerts { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/IpEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/IpEvidence.cs
index 99748b37e34..9a8a0fd6bc7 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/IpEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/IpEvidence.cs
@@ -29,12 +29,14 @@ public IpEvidence()
 
         /// <summary>
         /// Gets or sets countryLetterCode.
+        /// The two-letter country code according to ISO 3166 format, for example: US, UK, CA, etc..).
         /// </summary>
         [JsonPropertyName("countryLetterCode")]
         public string CountryLetterCode { get; set; }
     
         /// <summary>
         /// Gets or sets ipAddress.
+        /// The value of the IP Address, can be either in V4 address or V6 address format.
         /// </summary>
         [JsonPropertyName("ipAddress")]
         public string IpAddress { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/LoggedOnUser.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/LoggedOnUser.cs
index c0c3bbbc6a9..cf4033b6c53 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/LoggedOnUser.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/LoggedOnUser.cs
@@ -23,12 +23,14 @@ public partial class LoggedOnUser
 
         /// <summary>
         /// Gets or sets accountName.
+        /// User account name of the logged-on user.
         /// </summary>
         [JsonPropertyName("accountName")]
         public string AccountName { get; set; }
     
         /// <summary>
         /// Gets or sets domainName.
+        /// User account domain of the logged-on user.
         /// </summary>
         [JsonPropertyName("domainName")]
         public string DomainName { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/MailClusterEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/MailClusterEvidence.cs
index 9779843776d..2df597805b1 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/MailClusterEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/MailClusterEvidence.cs
@@ -29,36 +29,42 @@ public MailClusterEvidence()
 
         /// <summary>
         /// Gets or sets clusterBy.
+        /// The clustering logic of the emails inside the cluster.
         /// </summary>
         [JsonPropertyName("clusterBy")]
         public string ClusterBy { get; set; }
     
         /// <summary>
         /// Gets or sets clusterByValue.
+        /// The value utilized to cluster the similar emails.
         /// </summary>
         [JsonPropertyName("clusterByValue")]
         public string ClusterByValue { get; set; }
     
         /// <summary>
         /// Gets or sets emailCount.
+        /// Count of emails in the email cluster.
         /// </summary>
         [JsonPropertyName("emailCount")]
         public Int64? EmailCount { get; set; }
     
         /// <summary>
         /// Gets or sets networkMessageIds.
+        /// Unique identifiers for the emails in the cluster, generated by Microsoft 365.
         /// </summary>
         [JsonPropertyName("networkMessageIds")]
         public IEnumerable<string> NetworkMessageIds { get; set; }
     
         /// <summary>
         /// Gets or sets query.
+        /// The query used to identify the email cluster.
         /// </summary>
         [JsonPropertyName("query")]
         public string Query { get; set; }
     
         /// <summary>
         /// Gets or sets urn.
+        /// Uniform resource name (URN) of the automated investigation where the cluster was identified.
         /// </summary>
         [JsonPropertyName("urn")]
         public string Urn { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/MailboxEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/MailboxEvidence.cs
index 9f299876c79..0a080862961 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/MailboxEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/MailboxEvidence.cs
@@ -29,18 +29,21 @@ public MailboxEvidence()
 
         /// <summary>
         /// Gets or sets displayName.
+        /// The name associated with the mailbox.
         /// </summary>
         [JsonPropertyName("displayName")]
         public string DisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets primaryAddress.
+        /// The primary email address of the mailbox.
         /// </summary>
         [JsonPropertyName("primaryAddress")]
         public string PrimaryAddress { get; set; }
     
         /// <summary>
         /// Gets or sets userAccount.
+        /// The user account of the mailbox.
         /// </summary>
         [JsonPropertyName("userAccount")]
         public UserAccount UserAccount { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/OauthApplicationEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/OauthApplicationEvidence.cs
index b20094d465b..579474fa536 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/OauthApplicationEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/OauthApplicationEvidence.cs
@@ -29,24 +29,28 @@ public OauthApplicationEvidence()
 
         /// <summary>
         /// Gets or sets appId.
+        /// Unique identifier of the application.
         /// </summary>
         [JsonPropertyName("appId")]
         public string AppId { get; set; }
     
         /// <summary>
         /// Gets or sets displayName.
+        /// Name of the application.
         /// </summary>
         [JsonPropertyName("displayName")]
         public string DisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets objectId.
+        /// The unique identifier of the application object in Azure AD.
         /// </summary>
         [JsonPropertyName("objectId")]
         public string ObjectId { get; set; }
     
         /// <summary>
         /// Gets or sets publisher.
+        /// The name of the application publisher.
         /// </summary>
         [JsonPropertyName("publisher")]
         public string Publisher { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/ProcessEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/ProcessEvidence.cs
index 612bf9110ce..bffeb5ca325 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/ProcessEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/ProcessEvidence.cs
@@ -30,60 +30,70 @@ public ProcessEvidence()
 
         /// <summary>
         /// Gets or sets detectionStatus.
+        /// The status of the detection.The possible values are: detected, blocked, prevented, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("detectionStatus")]
         public DetectionStatus? DetectionStatus { get; set; }
     
         /// <summary>
         /// Gets or sets imageFile.
+        /// Image file details.
         /// </summary>
         [JsonPropertyName("imageFile")]
         public FileDetails ImageFile { get; set; }
     
         /// <summary>
         /// Gets or sets mdeDeviceId.
+        /// A unique identifier assigned to a device by Microsoft Defender for Endpoint.
         /// </summary>
         [JsonPropertyName("mdeDeviceId")]
         public string MdeDeviceId { get; set; }
     
         /// <summary>
         /// Gets or sets parentProcessCreationDateTime.
+        /// Date and time when the parent of the process was created.
         /// </summary>
         [JsonPropertyName("parentProcessCreationDateTime")]
         public DateTimeOffset? ParentProcessCreationDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets parentProcessId.
+        /// Process ID (PID) of the parent process that spawned the process.
         /// </summary>
         [JsonPropertyName("parentProcessId")]
         public Int64? ParentProcessId { get; set; }
     
         /// <summary>
         /// Gets or sets parentProcessImageFile.
+        /// Parent process image file details.
         /// </summary>
         [JsonPropertyName("parentProcessImageFile")]
         public FileDetails ParentProcessImageFile { get; set; }
     
         /// <summary>
         /// Gets or sets processCommandLine.
+        /// Command line used to create the new process.
         /// </summary>
         [JsonPropertyName("processCommandLine")]
         public string ProcessCommandLine { get; set; }
     
         /// <summary>
         /// Gets or sets processCreationDateTime.
+        /// Date and time the process was created.
         /// </summary>
         [JsonPropertyName("processCreationDateTime")]
         public DateTimeOffset? ProcessCreationDateTime { get; set; }
     
         /// <summary>
         /// Gets or sets processId.
+        /// Process ID (PID) of the newly created process.
         /// </summary>
         [JsonPropertyName("processId")]
         public Int64? ProcessId { get; set; }
     
         /// <summary>
         /// Gets or sets userAccount.
+        /// User details of the user that ran the process.
         /// </summary>
         [JsonPropertyName("userAccount")]
         public UserAccount UserAccount { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryKeyEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryKeyEvidence.cs
index 993bf6c1e8c..3fca4934285 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryKeyEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryKeyEvidence.cs
@@ -29,12 +29,14 @@ public RegistryKeyEvidence()
 
         /// <summary>
         /// Gets or sets registryHive.
+        /// Registry hive of the key that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryHive")]
         public string RegistryHive { get; set; }
     
         /// <summary>
         /// Gets or sets registryKey.
+        /// Registry key that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryKey")]
         public string RegistryKey { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryValueEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryValueEvidence.cs
index 8eba110c998..00b43d25ac8 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryValueEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/RegistryValueEvidence.cs
@@ -29,30 +29,35 @@ public RegistryValueEvidence()
 
         /// <summary>
         /// Gets or sets registryHive.
+        /// Registry hive of the key that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryHive")]
         public string RegistryHive { get; set; }
     
         /// <summary>
         /// Gets or sets registryKey.
+        /// Registry key that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryKey")]
         public string RegistryKey { get; set; }
     
         /// <summary>
         /// Gets or sets registryValue.
+        /// Data of the registry value that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryValue")]
         public string RegistryValue { get; set; }
     
         /// <summary>
         /// Gets or sets registryValueName.
+        /// Name of the registry value that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryValueName")]
         public string RegistryValueName { get; set; }
     
         /// <summary>
         /// Gets or sets registryValueType.
+        /// Data type, such as binary or string, of the registry value that the recorded action was applied to.
         /// </summary>
         [JsonPropertyName("registryValueType")]
         public string RegistryValueType { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/SecurityGroupEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/SecurityGroupEvidence.cs
index 6576bf80ace..9115691cdd2 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/SecurityGroupEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/SecurityGroupEvidence.cs
@@ -29,12 +29,14 @@ public SecurityGroupEvidence()
 
         /// <summary>
         /// Gets or sets displayName.
+        /// The name of the security group.
         /// </summary>
         [JsonPropertyName("displayName")]
         public string DisplayName { get; set; }
     
         /// <summary>
         /// Gets or sets securityGroupId.
+        /// Unique identifier of the security group.
         /// </summary>
         [JsonPropertyName("securityGroupId")]
         public string SecurityGroupId { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/SinglePropertySchema.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/SinglePropertySchema.cs
index f77f5e7d3b0..35143f361df 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/SinglePropertySchema.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/SinglePropertySchema.cs
@@ -23,12 +23,14 @@ public partial class SinglePropertySchema
 
         /// <summary>
         /// Gets or sets name.
+        /// The name of the property.
         /// </summary>
         [JsonPropertyName("name")]
         public string Name { get; set; }
     
         /// <summary>
         /// Gets or sets type.
+        /// The type of the property.
         /// </summary>
         [JsonPropertyName("type")]
         public string Type { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/UrlEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/UrlEvidence.cs
index 52d6f60517e..dc9c71ab5bf 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/UrlEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/UrlEvidence.cs
@@ -29,6 +29,7 @@ public UrlEvidence()
 
         /// <summary>
         /// Gets or sets url.
+        /// The Unique Resource Locator (URL).
         /// </summary>
         [JsonPropertyName("url")]
         public string Url { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/UserAccount.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/UserAccount.cs
index efcc42055eb..b095915633d 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/UserAccount.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/UserAccount.cs
@@ -23,30 +23,35 @@ public partial class UserAccount
 
         /// <summary>
         /// Gets or sets accountName.
+        /// The user account's displayed name.
         /// </summary>
         [JsonPropertyName("accountName")]
         public string AccountName { get; set; }
     
         /// <summary>
         /// Gets or sets azureAdUserId.
+        /// The user object identifier in Azure AD.
         /// </summary>
         [JsonPropertyName("azureAdUserId")]
         public string AzureAdUserId { get; set; }
     
         /// <summary>
         /// Gets or sets domainName.
+        /// The name of the Active Directory domain of which the user is a member.
         /// </summary>
         [JsonPropertyName("domainName")]
         public string DomainName { get; set; }
     
         /// <summary>
         /// Gets or sets userPrincipalName.
+        /// The user principal name of the account in Azure AD.
         /// </summary>
         [JsonPropertyName("userPrincipalName")]
         public string UserPrincipalName { get; set; }
     
         /// <summary>
         /// Gets or sets userSid.
+        /// The local security identifier of the user account.
         /// </summary>
         [JsonPropertyName("userSid")]
         public string UserSid { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/UserEvidence.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/UserEvidence.cs
index bb2e0463334..42fcd964854 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/UserEvidence.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/UserEvidence.cs
@@ -29,6 +29,7 @@ public UserEvidence()
 
         /// <summary>
         /// Gets or sets userAccount.
+        /// The user account details.
         /// </summary>
         [JsonPropertyName("userAccount")]
         public UserAccount UserAccount { get; set; }
diff --git a/src/Microsoft.Graph/Generated/securitynamespace/model/VmMetadata.cs b/src/Microsoft.Graph/Generated/securitynamespace/model/VmMetadata.cs
index df216d7a2a5..a84e7a9a53e 100644
--- a/src/Microsoft.Graph/Generated/securitynamespace/model/VmMetadata.cs
+++ b/src/Microsoft.Graph/Generated/securitynamespace/model/VmMetadata.cs
@@ -23,24 +23,28 @@ public partial class VmMetadata
 
         /// <summary>
         /// Gets or sets cloudProvider.
+        /// The cloud provider hosting the virtual machine. The possible values are: unknown, azure, unknownFutureValue.
         /// </summary>
         [JsonPropertyName("cloudProvider")]
         public VmCloudProvider? CloudProvider { get; set; }
     
         /// <summary>
         /// Gets or sets resourceId.
+        /// Unique identifier of the Azure resource.
         /// </summary>
         [JsonPropertyName("resourceId")]
         public string ResourceId { get; set; }
     
         /// <summary>
         /// Gets or sets subscriptionId.
+        /// Unique identifier of the Azure subscription the customer tenant belongs to.
         /// </summary>
         [JsonPropertyName("subscriptionId")]
         public string SubscriptionId { get; set; }
     
         /// <summary>
         /// Gets or sets vmId.
+        /// Unique identifier of the virtual machine instance.
         /// </summary>
         [JsonPropertyName("vmId")]
         public string VmId { get; set; }
diff --git a/src/Microsoft.Graph/Microsoft.Graph.csproj b/src/Microsoft.Graph/Microsoft.Graph.csproj
index fadb74f0749..3592ea22163 100644
--- a/src/Microsoft.Graph/Microsoft.Graph.csproj
+++ b/src/Microsoft.Graph/Microsoft.Graph.csproj
@@ -21,13 +21,13 @@
     <DelaySign>false</DelaySign>
     <AssemblyOriginatorKeyFile>35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <VersionPrefix>4.49.0</VersionPrefix>
+    <VersionPrefix>4.50.0</VersionPrefix>
     <!-- VersionPrefix minor version should not be set when the change comes from the generator. It will be updated automatically. -->
     <!-- VersionPrefix minor version must be manually set when making manual changes to code. -->
     <!-- VersionPrefix major and patch versions must be manually set. -->
     <VersionSuffix></VersionSuffix>
     <PackageReleaseNotes>
-- Latest metadata updates from 13th December 2022 snapshot
+- Latest metadata updates from 3rd January 2023 snapshot
     </PackageReleaseNotes>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>