Facing issue in creating a Web app resource !

Question

When i am creating a web app resource its showing this reponse and then keep loading for hours , how to fix it ?

HTTP response :
{ "status": "Failed", "error": { "code": "429", "message": "App Service Plan Create operation is throttled for subscription 3ec26dfd-4404-4bec-8de4-18de9783e92c. Please contact support if issue persists.", "details": [ { "message": "App Service Plan Create operation is throttled for subscription 3ec26dfd-4404-4bec-8de4-18de9783e92c. Please contact support if issue persists." }, { "code": "429" }, {} ] } }