chore(appsync): improve error message for missing iam authorization mode

aws · Feb 19, 2025 · 1c05580 · 1c05580
1 parent b16fac2
commit 1c05580
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/aws-cdk-lib/aws-appsync/lib/eventapi.ts b/packages/aws-cdk-lib/aws-appsync/lib/eventapi.ts
@@ -211,7 +211,9 @@ export abstract class EventApiBase extends ApiBase implements IEventApi {
    */
   public grant(grantee: IGrantable, resources: AppSyncEventResource, ...actions: string[]): Grant {
     if (!this.authProviderTypes.includes(AppSyncAuthorizationType.IAM)) {
-      throw new ValidationError('IAM Authorization mode is not configured on this API.', this);
+      throw new ValidationError('Cannot use grant method because IAM Authorization mode is not present in the auth providers on this Event API.',
+        this,
+      );
     }
     return Grant.addToPrincipal({
       grantee,