diff --git a/sdk/digitaltwins/arm-digitaltwins/src/azureDigitalTwinsManagementClientContext.ts b/sdk/digitaltwins/arm-digitaltwins/src/azureDigitalTwinsManagementClientContext.ts
index 73126fd8cb01..4f358a3bbbc5 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/azureDigitalTwinsManagementClientContext.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/azureDigitalTwinsManagementClientContext.ts
@@ -44,7 +44,7 @@ export class AzureDigitalTwinsManagementClientContext extends msRestAzure.AzureS
 
     super(credentials, options);
 
-    this.apiVersion = '2020-03-01-preview';
+    this.apiVersion = '2020-10-31';
     this.acceptLanguage = 'en-US';
     this.longRunningOperationRetryTimeout = 30;
     this.baseUri = options.baseUri || this.baseUri || "https://management.azure.com";
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsEndpointMappers.ts b/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsEndpointMappers.ts
index 7c49775f78ca..055f00f52b58 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsEndpointMappers.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsEndpointMappers.ts
@@ -14,10 +14,10 @@ export {
   DigitalTwinsEndpointResourceListResult,
   DigitalTwinsEndpointResourceProperties,
   DigitalTwinsResource,
-  DigitalTwinsSkuInfo,
   ErrorDefinition,
   ErrorResponse,
   EventGrid,
   EventHub,
+  ExternalResource,
   ServiceBus
 } from "../models/mappers";
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsMappers.ts b/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsMappers.ts
index 7feda83f1195..81bb0227c51f 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsMappers.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/models/digitalTwinsMappers.ts
@@ -17,10 +17,10 @@ export {
   DigitalTwinsEndpointResourceProperties,
   DigitalTwinsPatchDescription,
   DigitalTwinsResource,
-  DigitalTwinsSkuInfo,
   ErrorDefinition,
   ErrorResponse,
   EventGrid,
   EventHub,
+  ExternalResource,
   ServiceBus
 } from "../models/mappers";
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/models/index.ts b/sdk/digitaltwins/arm-digitaltwins/src/models/index.ts
index 08d31c877a90..01ad3d820724 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/models/index.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/models/index.ts
@@ -11,12 +11,6 @@ import * as msRest from "@azure/ms-rest-js";
 
 export { BaseResource, CloudError };
 
-/**
- * Information about the SKU of the DigitalTwinsInstance.
- */
-export interface DigitalTwinsSkuInfo {
-}
-
 /**
  * The common properties of a DigitalTwinsInstance.
  */
@@ -56,13 +50,13 @@ export interface DigitalTwinsDescription extends DigitalTwinsResource {
    */
   readonly createdTime?: Date;
   /**
-   * Time when DigitalTwinsInstance was created.
+   * Time when DigitalTwinsInstance was updated.
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
    */
   readonly lastUpdatedTime?: Date;
   /**
    * The provisioning state. Possible values include: 'Provisioning', 'Deleting', 'Succeeded',
-   * 'Failed', 'Canceled'
+   * 'Failed', 'Canceled', 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving'
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
    */
   readonly provisioningState?: ProvisioningState;
@@ -153,6 +147,16 @@ export interface Operation {
    * Operation properties display
    */
   display?: OperationDisplay;
+  /**
+   * The intended executor of the operation.
+   * **NOTE: This property will not be serialized. It can only be populated by the server.**
+   */
+  readonly origin?: string;
+  /**
+   * If the operation is a data action (for data plane rbac).
+   * **NOTE: This property will not be serialized. It can only be populated by the server.**
+   */
+  readonly isDataAction?: boolean;
 }
 
 /**
@@ -173,10 +177,6 @@ export interface CheckNameResult {
    * Specifies a Boolean value that indicates if the name is available.
    */
   nameAvailable?: boolean;
-  /**
-   * The name that was checked.
-   */
-  name?: string;
   /**
    * Message indicating an unavailable name due to a conflict, or a description of the naming rules
    * that are violated.
@@ -190,9 +190,9 @@ export interface CheckNameResult {
 }
 
 /**
- * Definition of a Resource.
+ * Definition of a resource.
  */
-export interface ExternalResource {
+export interface ExternalResource extends BaseResource {
   /**
    * The resource identifier.
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
@@ -225,7 +225,7 @@ export interface DigitalTwinsEndpointResourceProperties {
   endpointType: "DigitalTwinsEndpointResourceProperties";
   /**
    * The provisioning state. Possible values include: 'Provisioning', 'Deleting', 'Succeeded',
-   * 'Failed', 'Canceled'
+   * 'Failed', 'Canceled', 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving', 'Disabled'
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
    */
   readonly provisioningState?: EndpointProvisioningState;
@@ -235,15 +235,15 @@ export interface DigitalTwinsEndpointResourceProperties {
    */
   readonly createdTime?: Date;
   /**
-   * The resource tags.
+   * Dead letter storage secret. Will be obfuscated during read.
    */
-  tags?: { [propertyName: string]: string };
+  deadLetterSecret?: string;
 }
 
 /**
  * DigitalTwinsInstance endpoint resource.
  */
-export interface DigitalTwinsEndpointResource extends BaseResource {
+export interface DigitalTwinsEndpointResource extends ExternalResource {
   /**
    * DigitalTwinsInstance endpoint resource properties.
    */
@@ -251,7 +251,7 @@ export interface DigitalTwinsEndpointResource extends BaseResource {
 }
 
 /**
- * properties related to servicebus.
+ * Properties related to ServiceBus.
  */
 export interface ServiceBus {
   /**
@@ -260,7 +260,7 @@ export interface ServiceBus {
   endpointType: "ServiceBus";
   /**
    * The provisioning state. Possible values include: 'Provisioning', 'Deleting', 'Succeeded',
-   * 'Failed', 'Canceled'
+   * 'Failed', 'Canceled', 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving', 'Disabled'
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
    */
   readonly provisioningState?: EndpointProvisioningState;
@@ -270,21 +270,21 @@ export interface ServiceBus {
    */
   readonly createdTime?: Date;
   /**
-   * The resource tags.
+   * Dead letter storage secret. Will be obfuscated during read.
    */
-  tags?: { [propertyName: string]: string };
+  deadLetterSecret?: string;
   /**
-   * PrimaryConnectionString of the endpoint. Will be obfuscated during read
+   * PrimaryConnectionString of the endpoint. Will be obfuscated during read.
    */
   primaryConnectionString: string;
   /**
-   * SecondaryConnectionString of the endpoint. Will be obfuscated during read
+   * SecondaryConnectionString of the endpoint. Will be obfuscated during read.
    */
-  secondaryConnectionString: string;
+  secondaryConnectionString?: string;
 }
 
 /**
- * properties related to eventhub.
+ * Properties related to EventHub.
  */
 export interface EventHub {
   /**
@@ -293,7 +293,7 @@ export interface EventHub {
   endpointType: "EventHub";
   /**
    * The provisioning state. Possible values include: 'Provisioning', 'Deleting', 'Succeeded',
-   * 'Failed', 'Canceled'
+   * 'Failed', 'Canceled', 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving', 'Disabled'
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
    */
   readonly provisioningState?: EndpointProvisioningState;
@@ -303,21 +303,21 @@ export interface EventHub {
    */
   readonly createdTime?: Date;
   /**
-   * The resource tags.
+   * Dead letter storage secret. Will be obfuscated during read.
    */
-  tags?: { [propertyName: string]: string };
+  deadLetterSecret?: string;
   /**
-   * PrimaryConnectionString of the endpoint. Will be obfuscated during read
+   * PrimaryConnectionString of the endpoint. Will be obfuscated during read.
    */
   connectionStringPrimaryKey: string;
   /**
-   * SecondaryConnectionString of the endpoint. Will be obfuscated during read
+   * SecondaryConnectionString of the endpoint. Will be obfuscated during read.
    */
-  connectionStringSecondaryKey: string;
+  connectionStringSecondaryKey?: string;
 }
 
 /**
- * properties related to eventgrid.
+ * Properties related to EventGrid.
  */
 export interface EventGrid {
   /**
@@ -326,7 +326,7 @@ export interface EventGrid {
   endpointType: "EventGrid";
   /**
    * The provisioning state. Possible values include: 'Provisioning', 'Deleting', 'Succeeded',
-   * 'Failed', 'Canceled'
+   * 'Failed', 'Canceled', 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving', 'Disabled'
    * **NOTE: This property will not be serialized. It can only be populated by the server.**
    */
   readonly provisioningState?: EndpointProvisioningState;
@@ -336,21 +336,21 @@ export interface EventGrid {
    */
   readonly createdTime?: Date;
   /**
-   * The resource tags.
+   * Dead letter storage secret. Will be obfuscated during read.
    */
-  tags?: { [propertyName: string]: string };
+  deadLetterSecret?: string;
   /**
    * EventGrid Topic Endpoint
    */
-  topicEndpoint?: string;
+  topicEndpoint: string;
   /**
-   * EventGrid secondary accesskey. Will be obfuscated during read
+   * EventGrid secondary accesskey. Will be obfuscated during read.
    */
   accessKey1: string;
   /**
-   * EventGrid secondary accesskey. Will be obfuscated during read
+   * EventGrid secondary accesskey. Will be obfuscated during read.
    */
-  accessKey2: string;
+  accessKey2?: string;
 }
 
 /**
@@ -439,11 +439,12 @@ export interface OperationListResult extends Array<Operation> {
 
 /**
  * Defines values for ProvisioningState.
- * Possible values include: 'Provisioning', 'Deleting', 'Succeeded', 'Failed', 'Canceled'
+ * Possible values include: 'Provisioning', 'Deleting', 'Succeeded', 'Failed', 'Canceled',
+ * 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving'
  * @readonly
  * @enum {string}
  */
-export type ProvisioningState = 'Provisioning' | 'Deleting' | 'Succeeded' | 'Failed' | 'Canceled';
+export type ProvisioningState = 'Provisioning' | 'Deleting' | 'Succeeded' | 'Failed' | 'Canceled' | 'Deleted' | 'Warning' | 'Suspending' | 'Restoring' | 'Moving';
 
 /**
  * Defines values for Reason.
@@ -455,11 +456,12 @@ export type Reason = 'Invalid' | 'AlreadyExists';
 
 /**
  * Defines values for EndpointProvisioningState.
- * Possible values include: 'Provisioning', 'Deleting', 'Succeeded', 'Failed', 'Canceled'
+ * Possible values include: 'Provisioning', 'Deleting', 'Succeeded', 'Failed', 'Canceled',
+ * 'Deleted', 'Warning', 'Suspending', 'Restoring', 'Moving', 'Disabled'
  * @readonly
  * @enum {string}
  */
-export type EndpointProvisioningState = 'Provisioning' | 'Deleting' | 'Succeeded' | 'Failed' | 'Canceled';
+export type EndpointProvisioningState = 'Provisioning' | 'Deleting' | 'Succeeded' | 'Failed' | 'Canceled' | 'Deleted' | 'Warning' | 'Suspending' | 'Restoring' | 'Moving' | 'Disabled';
 
 /**
  * Contains response data for the get operation.
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/models/mappers.ts b/sdk/digitaltwins/arm-digitaltwins/src/models/mappers.ts
index 7adcd8e20b59..61b298b8d66b 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/models/mappers.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/models/mappers.ts
@@ -12,25 +12,6 @@ import * as msRest from "@azure/ms-rest-js";
 export const CloudError = CloudErrorMapper;
 export const BaseResource = BaseResourceMapper;
 
-export const DigitalTwinsSkuInfo: msRest.CompositeMapper = {
-  serializedName: "DigitalTwinsSkuInfo",
-  type: {
-    name: "Composite",
-    className: "DigitalTwinsSkuInfo",
-    modelProperties: {
-      name: {
-        required: true,
-        isConstant: true,
-        serializedName: "name",
-        defaultValue: 'F1',
-        type: {
-          name: "String"
-        }
-      }
-    }
-  }
-};
-
 export const DigitalTwinsResource: msRest.CompositeMapper = {
   serializedName: "DigitalTwinsResource",
   type: {
@@ -48,7 +29,7 @@ export const DigitalTwinsResource: msRest.CompositeMapper = {
         readOnly: true,
         serializedName: "name",
         constraints: {
-          Pattern: /^(?![0-9]+$)(?!-)[a-zA-Z0-9-]{2,49}[a-zA-Z0-9]$/
+          Pattern: /^(?!-)[A-Za-z0-9-]{3,63}(?<!-)$/
         },
         type: {
           name: "String"
@@ -69,6 +50,7 @@ export const DigitalTwinsResource: msRest.CompositeMapper = {
         }
       },
       tags: {
+        nullable: true,
         serializedName: "tags",
         type: {
           name: "Dictionary",
@@ -78,15 +60,6 @@ export const DigitalTwinsResource: msRest.CompositeMapper = {
             }
           }
         }
-      },
-      sku: {
-        isConstant: true,
-        serializedName: "sku",
-        defaultValue: {},
-        type: {
-          name: "Composite",
-          className: "DigitalTwinsSkuInfo"
-        }
       }
     }
   }
@@ -121,6 +94,7 @@ export const DigitalTwinsDescription: msRest.CompositeMapper = {
         }
       },
       hostName: {
+        nullable: true,
         readOnly: true,
         serializedName: "properties.hostName",
         type: {
@@ -138,6 +112,7 @@ export const DigitalTwinsPatchDescription: msRest.CompositeMapper = {
     className: "DigitalTwinsPatchDescription",
     modelProperties: {
       tags: {
+        nullable: true,
         serializedName: "tags",
         type: {
           name: "Dictionary",
@@ -173,6 +148,7 @@ export const ErrorDefinition: msRest.CompositeMapper = {
         }
       },
       details: {
+        nullable: true,
         readOnly: true,
         serializedName: "details",
         type: {
@@ -263,6 +239,21 @@ export const Operation: msRest.CompositeMapper = {
           name: "Composite",
           className: "OperationDisplay"
         }
+      },
+      origin: {
+        nullable: true,
+        readOnly: true,
+        serializedName: "origin",
+        type: {
+          name: "String"
+        }
+      },
+      isDataAction: {
+        readOnly: true,
+        serializedName: "isDataAction",
+        type: {
+          name: "Boolean"
+        }
       }
     }
   }
@@ -306,19 +297,15 @@ export const CheckNameResult: msRest.CompositeMapper = {
           name: "Boolean"
         }
       },
-      name: {
-        serializedName: "name",
-        type: {
-          name: "String"
-        }
-      },
       message: {
+        nullable: true,
         serializedName: "message",
         type: {
           name: "String"
         }
       },
       reason: {
+        nullable: true,
         serializedName: "reason",
         type: {
           name: "String"
@@ -374,6 +361,7 @@ export const DigitalTwinsEndpointResourceProperties: msRest.CompositeMapper = {
     className: "DigitalTwinsEndpointResourceProperties",
     modelProperties: {
       provisioningState: {
+        nullable: true,
         readOnly: true,
         serializedName: "provisioningState",
         type: {
@@ -381,21 +369,18 @@ export const DigitalTwinsEndpointResourceProperties: msRest.CompositeMapper = {
         }
       },
       createdTime: {
+        nullable: true,
         readOnly: true,
         serializedName: "createdTime",
         type: {
           name: "DateTime"
         }
       },
-      tags: {
-        serializedName: "tags",
+      deadLetterSecret: {
+        nullable: true,
+        serializedName: "deadLetterSecret",
         type: {
-          name: "Dictionary",
-          value: {
-            type: {
-              name: "String"
-            }
-          }
+          name: "String"
         }
       },
       endpointType: {
@@ -415,6 +400,7 @@ export const DigitalTwinsEndpointResource: msRest.CompositeMapper = {
     name: "Composite",
     className: "DigitalTwinsEndpointResource",
     modelProperties: {
+      ...ExternalResource.type.modelProperties,
       properties: {
         serializedName: "properties",
         type: {
@@ -437,13 +423,14 @@ export const ServiceBus: msRest.CompositeMapper = {
       ...DigitalTwinsEndpointResourceProperties.type.modelProperties,
       primaryConnectionString: {
         required: true,
+        nullable: true,
         serializedName: "primaryConnectionString",
         type: {
           name: "String"
         }
       },
       secondaryConnectionString: {
-        required: true,
+        nullable: true,
         serializedName: "secondaryConnectionString",
         type: {
           name: "String"
@@ -464,14 +451,15 @@ export const EventHub: msRest.CompositeMapper = {
       ...DigitalTwinsEndpointResourceProperties.type.modelProperties,
       connectionStringPrimaryKey: {
         required: true,
-        serializedName: "connectionString-PrimaryKey",
+        nullable: true,
+        serializedName: "connectionStringPrimaryKey",
         type: {
           name: "String"
         }
       },
       connectionStringSecondaryKey: {
-        required: true,
-        serializedName: "connectionString-SecondaryKey",
+        nullable: true,
+        serializedName: "connectionStringSecondaryKey",
         type: {
           name: "String"
         }
@@ -490,6 +478,7 @@ export const EventGrid: msRest.CompositeMapper = {
     modelProperties: {
       ...DigitalTwinsEndpointResourceProperties.type.modelProperties,
       topicEndpoint: {
+        required: true,
         serializedName: "TopicEndpoint",
         type: {
           name: "String"
@@ -497,13 +486,14 @@ export const EventGrid: msRest.CompositeMapper = {
       },
       accessKey1: {
         required: true,
+        nullable: true,
         serializedName: "accessKey1",
         type: {
           name: "String"
         }
       },
       accessKey2: {
-        required: true,
+        nullable: true,
         serializedName: "accessKey2",
         type: {
           name: "String"
@@ -520,6 +510,7 @@ export const DigitalTwinsDescriptionListResult: msRest.CompositeMapper = {
     className: "DigitalTwinsDescriptionListResult",
     modelProperties: {
       nextLink: {
+        nullable: true,
         serializedName: "nextLink",
         type: {
           name: "String"
@@ -548,6 +539,7 @@ export const DigitalTwinsEndpointResourceListResult: msRest.CompositeMapper = {
     className: "DigitalTwinsEndpointResourceListResult",
     modelProperties: {
       nextLink: {
+        nullable: true,
         serializedName: "nextLink",
         type: {
           name: "String"
@@ -576,6 +568,7 @@ export const OperationListResult: msRest.CompositeMapper = {
     className: "OperationListResult",
     modelProperties: {
       nextLink: {
+        nullable: true,
         serializedName: "nextLink",
         type: {
           name: "String"
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/models/parameters.ts b/sdk/digitaltwins/arm-digitaltwins/src/models/parameters.ts
index 87197ff66823..113ca15ff529 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/models/parameters.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/models/parameters.ts
@@ -26,7 +26,7 @@ export const apiVersion: msRest.OperationQueryParameter = {
     required: true,
     isConstant: true,
     serializedName: "api-version",
-    defaultValue: '2020-03-01-preview',
+    defaultValue: '2020-10-31',
     constraints: {
       MinLength: 10
     },
@@ -41,9 +41,9 @@ export const endpointName: msRest.OperationURLParameter = {
     required: true,
     serializedName: "endpointName",
     constraints: {
-      MaxLength: 64,
-      MinLength: 1,
-      Pattern: /^[A-Za-z0-9-._]{1,64}$/
+      MaxLength: 49,
+      MinLength: 2,
+      Pattern: /^(?![0-9]+$)(?!-)[a-zA-Z0-9-]{2,49}[a-zA-Z0-9]$/
     },
     type: {
       name: "String"
@@ -94,8 +94,9 @@ export const resourceName: msRest.OperationURLParameter = {
     required: true,
     serializedName: "resourceName",
     constraints: {
-      MaxLength: 64,
-      MinLength: 1
+      MaxLength: 63,
+      MinLength: 3,
+      Pattern: /^(?!-)[A-Za-z0-9-]{3,63}(?<!-)$/
     },
     type: {
       name: "String"
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwins.ts b/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwins.ts
index 6823edb88fb6..efcaf26e86ea 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwins.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwins.ts
@@ -469,7 +469,6 @@ const beginUpdateOperationSpec: msRest.OperationSpec = {
     200: {
       bodyMapper: Mappers.DigitalTwinsDescription
     },
-    201: {},
     default: {
       bodyMapper: Mappers.ErrorResponse
     }
@@ -492,7 +491,9 @@ const beginDeleteMethodOperationSpec: msRest.OperationSpec = {
     Parameters.acceptLanguage
   ],
   responses: {
-    200: {},
+    200: {
+      bodyMapper: Mappers.DigitalTwinsDescription
+    },
     202: {
       bodyMapper: Mappers.DigitalTwinsDescription
     },
diff --git a/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwinsEndpoint.ts b/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwinsEndpoint.ts
index e6766f523edf..5bf63e2afe9d 100644
--- a/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwinsEndpoint.ts
+++ b/sdk/digitaltwins/arm-digitaltwins/src/operations/digitalTwinsEndpoint.ts
@@ -300,7 +300,9 @@ const beginDeleteMethodOperationSpec: msRest.OperationSpec = {
     Parameters.acceptLanguage
   ],
   responses: {
-    200: {},
+    200: {
+      bodyMapper: Mappers.DigitalTwinsEndpointResource
+    },
     202: {
       bodyMapper: Mappers.DigitalTwinsEndpointResource
     },