diff --git a/custom-words.txt b/custom-words.txt
index b28a5362f721..9b767207dd20 100644
--- a/custom-words.txt
+++ b/custom-words.txt
@@ -2523,4 +2523,5 @@ Dataworld
 Asana
 AppFigures
 Twilio
-getazresiliencystatus
\ No newline at end of file
+getazresiliencystatus
+DTCs
\ No newline at end of file
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceDtcs.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceDtcs.json
new file mode 100644
index 000000000000..6969cb669700
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceDtcs.json
@@ -0,0 +1,315 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2022-02-01-preview",
+    "title": "SqlManagementClient",
+    "description": "The Azure SQL Database management API provides a RESTful set of web APIs that interact with Azure SQL Database services to manage your databases. The API enables users to create, retrieve, update, and delete databases, servers, and other entities."
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "paths": {
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/managedInstances/{managedInstanceName}/dtc": {
+      "get": {
+        "tags": [
+          "ManagedInstanceDtcs"
+        ],
+        "description": "Gets a list of managed instance DTC settings.",
+        "operationId": "ManagedInstanceDtcs_ListByManagedInstance",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupParameter"
+          },
+          {
+            "$ref": "#/parameters/ManagedInstanceNameParameter"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successfully retrieved the specified managed instance DTC settings.",
+            "schema": {
+              "$ref": "#/definitions/ManagedInstanceDtcListResult"
+            }
+          },
+          "default": {
+            "description": "*** Error Responses: ***\n\n * 400 InvalidDtcVirtualClusterVersion - Virtual cluster version of the Azure SQL Managed Instance \"{0}\" is not supported.\n\n * 400 ManagementServiceManagedInstanceDtcFeatureDisabled - User tried to interact with Azure SQL Managed Instance DTC settings but DTC feature is currently not supported.\n\n * 404 SubscriptionNotFound - The requested subscription was not found.\n\n * 404 ResourceNotFound - The requested resource was not found."
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        },
+        "x-ms-examples": {
+          "Gets a list of managed instance DTC settings.": {
+            "$ref": "./examples/ManagedInstanceDtcList.json"
+          }
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/managedInstances/{managedInstanceName}/dtc/{dtcName}": {
+      "get": {
+        "tags": [
+          "ManagedInstanceDtcs"
+        ],
+        "description": "Gets managed instance DTC settings.",
+        "operationId": "ManagedInstanceDtcs_Get",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupParameter"
+          },
+          {
+            "$ref": "#/parameters/ManagedInstanceNameParameter"
+          },
+          {
+            "name": "dtcName",
+            "in": "path",
+            "description": "The name of the managed instance DTC.",
+            "required": true,
+            "type": "string",
+            "enum": [
+              "current"
+            ],
+            "x-ms-enum": {
+              "name": "DtcName",
+              "modelAsString": true
+            }
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successfully retrieved the specified managed instance DTC settings.",
+            "schema": {
+              "$ref": "#/definitions/ManagedInstanceDtc"
+            }
+          },
+          "default": {
+            "description": "*** Error Responses: ***\n\n * 400 InvalidDtcName - User tried to interact with Azure SQL Managed Instance DTC settings with a DTC name different from 'current'.\n\n * 400 InvalidUpdateDtcOperationParameters - The provided set of parameters in the body of the request is either empty or invalid.\n\n * 400 InvalidDtcAuthenticationMethod - DTC authentication method \"{0}\" is not supported.\n\n * 400 InvalidDtcVirtualClusterVersion - Virtual cluster version of the Azure SQL Managed Instance \"{0}\" is not supported.\n\n * 400 ManagementServiceManagedInstanceDtcFeatureDisabled - User tried to interact with Azure SQL Managed Instance DTC settings but DTC feature is currently not supported.\n\n * 404 SubscriptionNotFound - The requested subscription was not found.\n\n * 404 ResourceNotFound - The requested resource was not found."
+          }
+        },
+        "x-ms-examples": {
+          "Gets managed instance DTC settings.": {
+            "$ref": "./examples/ManagedInstanceDtcGet.json"
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "ManagedInstanceDtcs"
+        ],
+        "description": "Updates managed instance DTC settings.",
+        "operationId": "ManagedInstanceDtcs_CreateOrUpdate",
+        "parameters": [
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ResourceGroupParameter"
+          },
+          {
+            "$ref": "#/parameters/ManagedInstanceNameParameter"
+          },
+          {
+            "name": "dtcName",
+            "in": "path",
+            "description": "The name of the managed instance DTC.",
+            "required": true,
+            "type": "string",
+            "enum": [
+              "current"
+            ],
+            "x-ms-enum": {
+              "name": "DtcName",
+              "modelAsString": true
+            }
+          },
+          {
+            "name": "parameters",
+            "in": "body",
+            "description": "Managed instance DTC settings.",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/ManagedInstanceDtc"
+            }
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../common/v1/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Applying DTC settings is in progress",
+            "schema": {
+              "$ref": "#/definitions/ManagedInstanceDtc"
+            }
+          },
+          "default": {
+            "description": "*** Error Responses: ***\n\n * 400 InvalidDtcName - User tried to interact with Azure SQL Managed Instance DTC settings with a DTC name different from 'current'.\n\n * 400 InvalidUpdateDtcOperationParameters - The provided set of parameters in the body of the request is either empty or invalid.\n\n * 400 InvalidDtcAuthenticationMethod - DTC authentication method \"{0}\" is not supported.\n\n * 400 InvalidDtcVirtualClusterVersion - Virtual cluster version of the Azure SQL Managed Instance \"{0}\" is not supported.\n\n * 400 ManagementServiceManagedInstanceDtcFeatureDisabled - User tried to interact with Azure SQL Managed Instance DTC settings but DTC feature is currently not supported.\n\n * 404 ResourceNotFound - The requested resource was not found.\n\n * 404 OperationIdNotFound - The operation with Id does not exist.\n\n * 404 OperationIdNotFound - The operation with Id does not exist.\n\n * 409 OperationCancelled - The operation has been cancelled by user.\n\n * 409 OperationInterrupted - The operation on the resource could not be completed because it was interrupted by another operation on the same resource.\n\n * 500 OperationTimedOut - The operation timed out and automatically rolled back. Please retry the operation."
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-examples": {
+          "Updates managed instance DTC settings with all optional parameters specified.": {
+            "$ref": "./examples/ManagedInstanceDtcUpdateMax.json"
+          },
+          "Updates managed instance DTC settings by enabling DTC.": {
+            "$ref": "./examples/ManagedInstanceDtcUpdateEnableDtc.json"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "ManagedInstanceDtc": {
+      "description": "SQL Managed Instance DTC",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "../../../common/v1/types.json#/definitions/ProxyResource"
+        }
+      ],
+      "properties": {
+        "properties": {
+          "$ref": "#/definitions/ManagedInstanceDtcProperties",
+          "description": "Resource properties.",
+          "x-ms-client-flatten": true
+        }
+      }
+    },
+    "ManagedInstanceDtcListResult": {
+      "description": "A list of managed instance's DTCs.",
+      "type": "object",
+      "properties": {
+        "value": {
+          "description": "Array of results.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/ManagedInstanceDtc"
+          },
+          "readOnly": true
+        },
+        "nextLink": {
+          "description": "Link to retrieve next page of results.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
+    "ManagedInstanceDtcProperties": {
+      "description": "The properties of managed instance DTC.",
+      "type": "object",
+      "properties": {
+        "dtcEnabled": {
+          "description": "Active status of managed instance DTC.",
+          "type": "boolean"
+        },
+        "securitySettings": {
+          "$ref": "#/definitions/ManagedInstanceDtcSecuritySettings",
+          "description": "Security settings of managed instance DTC."
+        },
+        "externalDnsSuffixSearchList": {
+          "description": "External dns suffix search list of managed instance DTC.",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "dtcHostNameDnsSuffix": {
+          "description": "Host name dns suffix of managed instance DTC.",
+          "type": "string",
+          "readOnly": true
+        },
+        "provisioningState": {
+          "description": "Provisioning state of managed instance DTC.",
+          "enum": [
+            "Created",
+            "InProgress",
+            "Succeeded",
+            "Failed",
+            "Canceled"
+          ],
+          "type": "string",
+          "readOnly": true,
+          "x-ms-enum": {
+            "name": "ProvisioningState",
+            "modelAsString": true
+          }
+        }
+      }
+    },
+    "ManagedInstanceDtcSecuritySettings": {
+      "description": "The Security Settings of managed instance DTC.",
+      "type": "object",
+      "properties": {
+        "transactionManagerCommunicationSettings": {
+          "$ref": "#/definitions/ManagedInstanceDtcTransactionManagerCommunicationSettings",
+          "description": "Transaction Manager communication settings of managed instance DTC."
+        },
+        "xaTransactionsEnabled": {
+          "description": "Allow XA Transactions to managed instance DTC.",
+          "type": "boolean"
+        },
+        "snaLu6point2TransactionsEnabled": {
+          "description": "Allow SNA LU 6.2 to managed instance DTC.",
+          "type": "boolean"
+        }
+      }
+    },
+    "ManagedInstanceDtcTransactionManagerCommunicationSettings": {
+      "description": "The Transaction Manager Communication Settings of managed instance DTC.",
+      "type": "object",
+      "properties": {
+        "allowInboundEnabled": {
+          "description": "Allow Inbound traffic to managed instance DTC.",
+          "type": "boolean"
+        },
+        "allowOutboundEnabled": {
+          "description": "Allow Outbound traffic of managed instance DTC.",
+          "type": "boolean"
+        },
+        "authentication": {
+          "description": "Authentication type of managed instance DTC.",
+          "type": "string"
+        }
+      }
+    }
+  },
+  "parameters": {
+    "ManagedInstanceNameParameter": {
+      "name": "managedInstanceName",
+      "in": "path",
+      "description": "The name of the managed instance.",
+      "required": true,
+      "type": "string",
+      "x-ms-parameter-location": "method"
+    }
+  },
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "flow": "implicit",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  }
+}
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcGet.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcGet.json
new file mode 100644
index 000000000000..6dddb775e3d4
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcGet.json
@@ -0,0 +1,36 @@
+{
+  "parameters": {
+    "subscriptionId": "00000000-1111-2222-3333-444444444444",
+    "resourceGroupName": "testrg",
+    "managedInstanceName": "testinstance",
+    "dtcName": "current",
+    "api-version": "2022-02-01-preview"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "properties": {
+          "dtcEnabled": true,
+          "securitySettings": {
+            "transactionManagerCommunicationSettings": {
+              "allowInboundEnabled": false,
+              "allowOutboundEnabled": true,
+              "authentication": "NoAuth"
+            },
+            "xaTransactionsEnabled": false,
+            "snaLu6point2TransactionsEnabled": false
+          },
+          "externalDnsSuffixSearchList": [
+            "dns.example1.com",
+            "dns.example2.com"
+          ],
+          "dtcHostNameDnsSuffix": "dtcHostNameSuffixExample.com",
+          "provisioningState": "Succeeded"
+        },
+        "id": "/subscriptions/00000000-1111-2222-3333-444444444444/resourceGroups/testrg/providers/Microsoft.Sql/managedInstances/testinstance/dtc/current",
+        "name": "current",
+        "type": "Microsoft.Sql/managedInstances/dtc"
+      }
+    }
+  }
+}
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcList.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcList.json
new file mode 100644
index 000000000000..002b21dc430e
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcList.json
@@ -0,0 +1,39 @@
+{
+  "parameters": {
+    "subscriptionId": "00000000-1111-2222-3333-444444444444",
+    "resourceGroupName": "testrg",
+    "managedInstanceName": "testinstance",
+    "api-version": "2022-02-01-preview"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "properties": {
+              "dtcEnabled": true,
+              "securitySettings": {
+                "transactionManagerCommunicationSettings": {
+                  "allowInboundEnabled": false,
+                  "allowOutboundEnabled": true,
+                  "authentication": "NoAuth"
+                },
+                "xaTransactionsEnabled": false,
+                "snaLu6point2TransactionsEnabled": false
+              },
+              "externalDnsSuffixSearchList": [
+                "dns.example1.com",
+                "dns.example2.com"
+              ],
+              "dtcHostNameDnsSuffix": "dtcHostNameSuffixExample.com",
+              "provisioningState": "Succeeded"
+            },
+            "id": "/subscriptions/00000000-1111-2222-3333-444444444444/resourceGroups/testrg/providers/Microsoft.Sql/managedInstances/testinstance/dtc/current",
+            "name": "current",
+            "type": "Microsoft.Sql/managedInstances/dtc"
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcUpdateEnableDtc.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcUpdateEnableDtc.json
new file mode 100644
index 000000000000..54bbf8b9d808
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcUpdateEnableDtc.json
@@ -0,0 +1,41 @@
+{
+  "parameters": {
+    "subscriptionId": "00000000-1111-2222-3333-444444444444",
+    "resourceGroupName": "testrg",
+    "managedInstanceName": "testinstance",
+    "dtcName": "current",
+    "api-version": "2022-02-01-preview",
+    "parameters": {
+      "properties": {
+        "dtcEnabled": true
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "properties": {
+          "dtcEnabled": true,
+          "securitySettings": {
+            "transactionManagerCommunicationSettings": {
+              "allowInboundEnabled": false,
+              "allowOutboundEnabled": true,
+              "authentication": "NoAuth"
+            },
+            "xaTransactionsEnabled": false,
+            "snaLu6point2TransactionsEnabled": false
+          },
+          "externalDnsSuffixSearchList": [
+            "dns.example1.com",
+            "dns.example2.com"
+          ],
+          "dtcHostNameDnsSuffix": "dtcHostNameSuffixExample.com",
+          "provisioningState": "Updating"
+        },
+        "id": "/subscriptions/00000000-1111-2222-3333-444444444444/resourceGroups/testrg/providers/Microsoft.Sql/managedInstances/testinstance/dtc/current",
+        "name": "current",
+        "type": "Microsoft.Sql/managedInstances/dtc"
+      }
+    }
+  }
+}
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcUpdateMax.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcUpdateMax.json
new file mode 100644
index 000000000000..99a81ca66fe5
--- /dev/null
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/examples/ManagedInstanceDtcUpdateMax.json
@@ -0,0 +1,54 @@
+{
+  "parameters": {
+    "subscriptionId": "00000000-1111-2222-3333-444444444444",
+    "resourceGroupName": "testrg",
+    "managedInstanceName": "testinstance",
+    "dtcName": "current",
+    "api-version": "2022-02-01-preview",
+    "parameters": {
+      "properties": {
+        "dtcEnabled": true,
+        "securitySettings": {
+          "transactionManagerCommunicationSettings": {
+            "allowInboundEnabled": false,
+            "allowOutboundEnabled": true,
+            "authentication": "NoAuth"
+          },
+          "xaTransactionsEnabled": false,
+          "snaLu6point2TransactionsEnabled": false
+        },
+        "externalDnsSuffixSearchList": [
+          "dns.example1.com",
+          "dns.example2.com"
+        ]
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "properties": {
+          "dtcEnabled": true,
+          "securitySettings": {
+            "transactionManagerCommunicationSettings": {
+              "allowInboundEnabled": false,
+              "allowOutboundEnabled": true,
+              "authentication": "NoAuth"
+            },
+            "xaTransactionsEnabled": false,
+            "snaLu6point2TransactionsEnabled": false
+          },
+          "externalDnsSuffixSearchList": [
+            "dns.example1.com",
+            "dns.example2.com"
+          ],
+          "dtcHostNameDnsSuffix": "dtcHostNameSuffixExample.com",
+          "provisioningState": "Updating"
+        },
+        "id": "/subscriptions/00000000-1111-2222-3333-444444444444/resourceGroups/testrg/providers/Microsoft.Sql/managedInstances/testinstance/dtc/current",
+        "name": "current",
+        "type": "Microsoft.Sql/managedInstances/dtc"
+      }
+    }
+  }
+}
diff --git a/specification/sql/resource-manager/readme.md b/specification/sql/resource-manager/readme.md
index 1b825cacb0a4..e208a4f70d7c 100644
--- a/specification/sql/resource-manager/readme.md
+++ b/specification/sql/resource-manager/readme.md
@@ -99,6 +99,7 @@ input-file:
   - Microsoft.Sql/preview/2022-02-01-preview/ManagedDatabases.json
   - Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceAdministrators.json
   - Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceAzureADOnlyAuthentications.json
+  - Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceDtcs.json
   - Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceEncryptionProtectors.json
   - Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceKeys.json
   - Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceLongTermRetentionPolicies.json
@@ -396,6 +397,7 @@ input-file:
 - ./Microsoft.Sql/preview/2021-11-01-preview/ManagedServerDnsAliases.json
 - ./Microsoft.Sql/preview/2021-11-01-preview/SensitivityLabels.json
 - ./Microsoft.Sql/preview/2021-11-01-preview/EndpointCertificates.json
+- ./Microsoft.Sql/preview/2022-02-01-preview/ManagedInstanceDtcs.json
 
 
 # Needed when there is more than one input file