diff --git a/src/definition/externalComponent/IExternalComponent.ts b/src/definition/externalComponent/IExternalComponent.ts
index 1e58fa836..00e7198ba 100644
--- a/src/definition/externalComponent/IExternalComponent.ts
+++ b/src/definition/externalComponent/IExternalComponent.ts
@@ -3,6 +3,10 @@ import { IExternalComponentOptions } from './IExternalComponentOptions';
  * Represents an external component that is being provided.
  */
 export interface IExternalComponent {
+    /**
+     * Provides the appId of the app which the external component belongs to.
+     */
+    appId: string;
     /**
      * Provides the name of the external component.
      */