diff --git a/packages/@azure/arm-datamigration/lib/models/index.ts b/packages/@azure/arm-datamigration/lib/models/index.ts
index 978c6652c980..b8b709373af4 100644
--- a/packages/@azure/arm-datamigration/lib/models/index.ts
+++ b/packages/@azure/arm-datamigration/lib/models/index.ts
@@ -569,6 +569,11 @@ export interface ProjectTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
 }
 
 /**
@@ -603,6 +608,11 @@ export interface GetTdeCertificatesSqlTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {GetTdeCertificatesSqlTaskInput} [input] Task input
    */
@@ -955,6 +965,11 @@ export interface ValidateMongoDbTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MongoDbMigrationSettings} [input]
    */
@@ -1212,6 +1227,11 @@ export interface ValidateMigrationInputSqlServerSqlMITaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ValidateMigrationInputSqlServerSqlMITaskInput} [input] Task input
    */
@@ -1356,6 +1376,11 @@ export interface ValidateMigrationInputSqlServerSqlDbSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ValidateSyncMigrationInputSqlServerTaskInput} [input] Task input
    */
@@ -1812,6 +1837,11 @@ export interface MigratePostgreSqlAzureDbForPostgreSqlSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MigratePostgreSqlAzureDbForPostgreSqlSyncTaskInput} [input] Task
    * input
@@ -2242,6 +2272,11 @@ export interface MigrateMySqlAzureDbForMySqlSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MigrateMySqlAzureDbForMySqlSyncTaskInput} [input] Task input
    */
@@ -2701,6 +2736,11 @@ export interface MigrateSqlServerSqlDbSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MigrateSqlServerSqlDbSyncTaskInput} [input] Task input
    */
@@ -3617,6 +3657,11 @@ export interface MigrateSqlServerSqlDbTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MigrateSqlServerSqlDbTaskInput} [input] Task input
    */
@@ -4097,6 +4142,11 @@ export interface MigrateSqlServerSqlMITaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MigrateSqlServerSqlMITaskInput} [input] Task input
    */
@@ -4142,6 +4192,11 @@ export interface MigrateMongoDbTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MongoDbMigrationSettings} [input]
    */
@@ -4247,6 +4302,11 @@ export interface ConnectToTargetAzureDbForMySqlTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToTargetAzureDbForMySqlTaskInput} [input] Task input
    */
@@ -4354,6 +4414,11 @@ export interface ConnectToTargetSqlMITaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToTargetSqlMITaskInput} [input] Task input
    */
@@ -4488,6 +4553,11 @@ export interface GetUserTablesSqlSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {GetUserTablesSqlSyncTaskInput} [input] Task input
    */
@@ -4581,6 +4651,11 @@ export interface GetUserTablesSqlTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {GetUserTablesSqlTaskInput} [input] Task input
    */
@@ -4682,6 +4757,11 @@ export interface ConnectToTargetSqlSqlDbSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToTargetSqlSqlDbSyncTaskInput} [input] Task input
    */
@@ -4743,6 +4823,11 @@ export interface ConnectToTargetSqlDbTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToTargetSqlDbTaskInput} [input] Task input
    */
@@ -5152,6 +5237,11 @@ export interface ConnectToSourceSqlServerSyncTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToSourceSqlServerTaskInput} [input] Task input
    */
@@ -5198,6 +5288,11 @@ export interface ConnectToSourceSqlServerTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToSourceSqlServerTaskInput} [input] Task input
    */
@@ -5390,6 +5485,11 @@ export interface ConnectToMongoDbTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MongoDbConnectionInfo} [input]
    */
@@ -6178,6 +6278,11 @@ export interface ConnectToSourceMySqlTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {ConnectToSourceMySqlTaskInput} [input] Task input
    */
@@ -6307,6 +6412,11 @@ export interface MigrateSchemaSqlServerSqlDbTaskProperties {
    * the server.**
    */
   readonly commands?: CommandPropertiesUnion[];
+  /**
+   * @member {{ [propertyName: string]: string }} [clientData] Key value pairs
+   * of client data to attach meta data information to task
+   */
+  clientData?: { [propertyName: string]: string };
   /**
    * @member {MigrateSchemaSqlServerSqlDbTaskInput} [input] Task input
    */
diff --git a/packages/@azure/arm-datamigration/lib/models/mappers.ts b/packages/@azure/arm-datamigration/lib/models/mappers.ts
index 4e0f01e7cc4d..7563fcd069da 100644
--- a/packages/@azure/arm-datamigration/lib/models/mappers.ts
+++ b/packages/@azure/arm-datamigration/lib/models/mappers.ts
@@ -684,6 +684,17 @@ export const ProjectTaskProperties: msRest.CompositeMapper = {
           }
         }
       },
+      clientData: {
+        serializedName: "clientData",
+        type: {
+          name: "Dictionary",
+          value: {
+            type: {
+              name: "String"
+            }
+          }
+        }
+      },
       taskType: {
         required: true,
         serializedName: "taskType",
diff --git a/packages/@azure/arm-datamigration/package.json b/packages/@azure/arm-datamigration/package.json
index 2af74a3ceb0a..3ef473badd36 100644
--- a/packages/@azure/arm-datamigration/package.json
+++ b/packages/@azure/arm-datamigration/package.json
@@ -5,7 +5,7 @@
   "version": "0.1.0",
   "dependencies": {
     "ms-rest-azure-js": "^1.0.181",
-    "ms-rest-js": "^1.0.461",
+    "ms-rest-js": "^1.0.460",
     "tslib": "^1.9.3"
   },
   "keywords": [