我尝试制作广告系列时使用Google AdWords API [OperationAccessDenied.ADD_OPERATION_NOT_PERMITTED]

I'm trying to create a google bell using the adwords API, but it throws me the following error ** ADD_OPERATION_NOT_PERMITTED **. I am not using the MCC Master Id, I am using the id that is on the top right of the adwords website as my ** clientCustomerId **. Why this error?I'm trying to create a google bell using the ad