diff --git a/packages/@azure/arm-datafactory/lib/models/datasetsMappers.ts b/packages/@azure/arm-datafactory/lib/models/datasetsMappers.ts
index d1ce28a45888..afb72cb35589 100644
--- a/packages/@azure/arm-datafactory/lib/models/datasetsMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/datasetsMappers.ts
@@ -231,6 +231,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,
diff --git a/packages/@azure/arm-datafactory/lib/models/factoriesMappers.ts b/packages/@azure/arm-datafactory/lib/models/factoriesMappers.ts
index e8fedcdc62e0..c6a290fb013b 100644
--- a/packages/@azure/arm-datafactory/lib/models/factoriesMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/factoriesMappers.ts
@@ -237,6 +237,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,
diff --git a/packages/@azure/arm-datafactory/lib/models/index.ts b/packages/@azure/arm-datafactory/lib/models/index.ts
index ef4036c714ca..d4eea03bb123 100644
--- a/packages/@azure/arm-datafactory/lib/models/index.ts
+++ b/packages/@azure/arm-datafactory/lib/models/index.ts
@@ -12958,6 +12958,27 @@ export interface SSISExecutionParameter {
   value: any;
 }
 
+/**
+ * @interface
+ * An interface representing SSISExecutionCredential.
+ * SSIS package execution credential.
+ *
+ */
+export interface SSISExecutionCredential {
+  /**
+   * @member {any} domain Domain for windows authentication.
+   */
+  domain: any;
+  /**
+   * @member {any} userName UseName for windows authentication.
+   */
+  userName: any;
+  /**
+   * @member {SecureString} password Password for windows authentication.
+   */
+  password: SecureString;
+}
+
 /**
  * @interface
  * An interface representing SSISPackageLocation.
@@ -13028,6 +13049,11 @@ export interface ExecuteSSISPackageActivity {
    * package. Type: string (or Expression with resultType string).
    */
   environmentPath?: any;
+  /**
+   * @member {{ [propertyName: string]: SSISExecutionCredential }}
+   * [executionCredential] The package execution credential.
+   */
+  executionCredential?: { [propertyName: string]: SSISExecutionCredential };
   /**
    * @member {IntegrationRuntimeReference} connectVia The integration runtime
    * reference.
diff --git a/packages/@azure/arm-datafactory/lib/models/integrationRuntimesMappers.ts b/packages/@azure/arm-datafactory/lib/models/integrationRuntimesMappers.ts
index 1dc7276e43f3..36f539e2766a 100644
--- a/packages/@azure/arm-datafactory/lib/models/integrationRuntimesMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/integrationRuntimesMappers.ts
@@ -248,6 +248,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,
diff --git a/packages/@azure/arm-datafactory/lib/models/linkedServicesMappers.ts b/packages/@azure/arm-datafactory/lib/models/linkedServicesMappers.ts
index 2ea3f23f85ef..6d84ec58f02b 100644
--- a/packages/@azure/arm-datafactory/lib/models/linkedServicesMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/linkedServicesMappers.ts
@@ -231,6 +231,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,
diff --git a/packages/@azure/arm-datafactory/lib/models/mappers.ts b/packages/@azure/arm-datafactory/lib/models/mappers.ts
index dd5a02ffde8d..614c742802fd 100644
--- a/packages/@azure/arm-datafactory/lib/models/mappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/mappers.ts
@@ -11480,6 +11480,40 @@ export const SSISExecutionParameter: msRest.CompositeMapper = {
   }
 };
 
+export const SSISExecutionCredential: msRest.CompositeMapper = {
+  serializedName: "SSISExecutionCredential",
+  type: {
+    name: "Composite",
+    className: "SSISExecutionCredential",
+    modelProperties: {
+      domain: {
+        required: true,
+        serializedName: "domain",
+        type: {
+          name: "Object"
+        }
+      },
+      userName: {
+        required: true,
+        serializedName: "userName",
+        type: {
+          name: "Object"
+        }
+      },
+      password: {
+        required: true,
+        serializedName: "password",
+        type: {
+          name: "Composite",
+          polymorphicDiscriminator: SecretBase.type.polymorphicDiscriminator,
+          uberParent: "SecretBase",
+          className: "SecureString"
+        }
+      }
+    }
+  }
+};
+
 export const SSISPackageLocation: msRest.CompositeMapper = {
   serializedName: "SSISPackageLocation",
   type: {
@@ -11532,6 +11566,18 @@ export const ExecuteSSISPackageActivity: msRest.CompositeMapper = {
           name: "Object"
         }
       },
+      executionCredential: {
+        serializedName: "typeProperties.executionCredential",
+        type: {
+          name: "Dictionary",
+          value: {
+            type: {
+              name: "Composite",
+              className: "SSISExecutionCredential"
+            }
+          }
+        }
+      },
       connectVia: {
         required: true,
         serializedName: "typeProperties.connectVia",
diff --git a/packages/@azure/arm-datafactory/lib/models/pipelinesMappers.ts b/packages/@azure/arm-datafactory/lib/models/pipelinesMappers.ts
index 8e2aa7dda423..4e04ac8b0e06 100644
--- a/packages/@azure/arm-datafactory/lib/models/pipelinesMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/pipelinesMappers.ts
@@ -232,6 +232,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,
diff --git a/packages/@azure/arm-datafactory/lib/models/rerunTriggersMappers.ts b/packages/@azure/arm-datafactory/lib/models/rerunTriggersMappers.ts
index 1cfba53fdcd4..57be366644bf 100644
--- a/packages/@azure/arm-datafactory/lib/models/rerunTriggersMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/rerunTriggersMappers.ts
@@ -232,6 +232,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,
diff --git a/packages/@azure/arm-datafactory/lib/models/triggersMappers.ts b/packages/@azure/arm-datafactory/lib/models/triggersMappers.ts
index a3dd2c7f6663..05ee1ad4c590 100644
--- a/packages/@azure/arm-datafactory/lib/models/triggersMappers.ts
+++ b/packages/@azure/arm-datafactory/lib/models/triggersMappers.ts
@@ -231,6 +231,7 @@ export {
   CustomActivityReferenceObject,
   ExecuteSSISPackageActivity,
   SSISPackageLocation,
+  SSISExecutionCredential,
   SSISExecutionParameter,
   SSISPropertyOverride,
   HDInsightSparkActivity,