diff --git a/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/AssignmentsOperations.cs b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/AssignmentsOperations.cs
index 80051d27e0566..146f4005e505b 100644
--- a/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/AssignmentsOperations.cs
+++ b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/AssignmentsOperations.cs
@@ -716,7 +716,7 @@ internal AssignmentsOperations(BlueprintManagementClient client)
             }
             // Construct URL
             var _baseUrl = Client.BaseUri.AbsoluteUri;
-            var _url = new System.Uri(new System.Uri(_baseUrl + (_baseUrl.EndsWith("/") ? "" : "/")), "{resourceScope}/providers/Microsoft.Blueprint/blueprintAssignments/{assignmentName}/WhoIsBlueprint").ToString();
+            var _url = new System.Uri(new System.Uri(_baseUrl + (_baseUrl.EndsWith("/") ? "" : "/")), "{resourceScope}/providers/Microsoft.Blueprint/blueprintAssignments/{assignmentName}/whoIsBlueprint").ToString();
             _url = _url.Replace("{resourceScope}", resourceScope);
             _url = _url.Replace("{assignmentName}", System.Uri.EscapeDataString(assignmentName));
             List<string> _queryParameters = new List<string>();
diff --git a/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/BlueprintModel.cs b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/BlueprintModel.cs
index 1c3f632e1f97e..63b91668360f5 100644
--- a/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/BlueprintModel.cs
+++ b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/BlueprintModel.cs
@@ -119,11 +119,10 @@ public BlueprintModel()
         public object Versions { get; set; }
 
         /// <summary>
-        /// Gets or sets layout view of the blueprint definition for UI
-        /// reference.
+        /// Gets layout view of the blueprint definition for UI reference.
         /// </summary>
         [JsonProperty(PropertyName = "properties.layout")]
-        public object Layout { get; set; }
+        public object Layout { get; private set; }
 
         /// <summary>
         /// Validate the object.
diff --git a/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/ErrorAdditionalInfo.cs b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/ErrorAdditionalInfo.cs
new file mode 100644
index 0000000000000..883bd9943f838
--- /dev/null
+++ b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/ErrorAdditionalInfo.cs
@@ -0,0 +1,59 @@
+// <auto-generated>
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+//
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+// </auto-generated>
+
+namespace Microsoft.Azure.Management.Blueprint.Models
+{
+    using Newtonsoft.Json;
+    using System.Linq;
+
+    /// <summary>
+    /// The resource management error additional info.
+    /// </summary>
+    public partial class ErrorAdditionalInfo
+    {
+        /// <summary>
+        /// Initializes a new instance of the ErrorAdditionalInfo class.
+        /// </summary>
+        public ErrorAdditionalInfo()
+        {
+            CustomInit();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the ErrorAdditionalInfo class.
+        /// </summary>
+        /// <param name="type">The additional info type.</param>
+        /// <param name="info">The additional info.</param>
+        public ErrorAdditionalInfo(string type = default(string), object info = default(object))
+        {
+            Type = type;
+            Info = info;
+            CustomInit();
+        }
+
+        /// <summary>
+        /// An initialization method that performs custom operations like setting defaults
+        /// </summary>
+        partial void CustomInit();
+
+        /// <summary>
+        /// Gets the additional info type.
+        /// </summary>
+        [JsonProperty(PropertyName = "type")]
+        public string Type { get; private set; }
+
+        /// <summary>
+        /// Gets the additional info.
+        /// </summary>
+        [JsonProperty(PropertyName = "info")]
+        public object Info { get; private set; }
+
+    }
+}
diff --git a/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/ErrorResponse.cs b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/ErrorResponse.cs
new file mode 100644
index 0000000000000..29f5183f5b819
--- /dev/null
+++ b/sdk/blueprint/Microsoft.Azure.Management.Blueprint/src/Generated/Models/ErrorResponse.cs
@@ -0,0 +1,90 @@
+// <auto-generated>
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+//
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+// </auto-generated>
+
+namespace Microsoft.Azure.Management.Blueprint.Models
+{
+    using Newtonsoft.Json;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Linq;
+
+    /// <summary>
+    /// Error Response
+    /// </summary>
+    /// <remarks>
+    /// Common error response for all Azure Resource Manager APIs to return
+    /// error details for failed operations. (This also follows the OData error
+    /// response format.)
+    /// </remarks>
+    public partial class ErrorResponse
+    {
+        /// <summary>
+        /// Initializes a new instance of the ErrorResponse class.
+        /// </summary>
+        public ErrorResponse()
+        {
+            CustomInit();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the ErrorResponse class.
+        /// </summary>
+        /// <param name="code">The error code.</param>
+        /// <param name="message">The error message.</param>
+        /// <param name="target">The error target.</param>
+        /// <param name="details">The error details.</param>
+        /// <param name="additionalInfo">The error additional info.</param>
+        public ErrorResponse(string code = default(string), string message = default(string), string target = default(string), IList<ErrorResponse> details = default(IList<ErrorResponse>), IList<ErrorAdditionalInfo> additionalInfo = default(IList<ErrorAdditionalInfo>))
+        {
+            Code = code;
+            Message = message;
+            Target = target;
+            Details = details;
+            AdditionalInfo = additionalInfo;
+            CustomInit();
+        }
+
+        /// <summary>
+        /// An initialization method that performs custom operations like setting defaults
+        /// </summary>
+        partial void CustomInit();
+
+        /// <summary>
+        /// Gets the error code.
+        /// </summary>
+        [JsonProperty(PropertyName = "code")]
+        public string Code { get; private set; }
+
+        /// <summary>
+        /// Gets the error message.
+        /// </summary>
+        [JsonProperty(PropertyName = "message")]
+        public string Message { get; private set; }
+
+        /// <summary>
+        /// Gets the error target.
+        /// </summary>
+        [JsonProperty(PropertyName = "target")]
+        public string Target { get; private set; }
+
+        /// <summary>
+        /// Gets the error details.
+        /// </summary>
+        [JsonProperty(PropertyName = "details")]
+        public IList<ErrorResponse> Details { get; private set; }
+
+        /// <summary>
+        /// Gets the error additional info.
+        /// </summary>
+        [JsonProperty(PropertyName = "additionalInfo")]
+        public IList<ErrorAdditionalInfo> AdditionalInfo { get; private set; }
+
+    }
+}