Google Ads REST API: The operation is not allowed for the given context., at operations[0]

Question

I was trying to create a campaigBudget:mutate with all information that Google Ads API ask for, but no result, they show me only one error :

The operation is not allowed for the given context., at operations[0]

this screenshot may help you guys:

HEADER:

BODY (Req & Res):

and this is an example from Google Ads API:

Thank you

Answer 1

After research I found that the problem was CUSTOMER_ID

In header we should set : login-customer-id => MANAGER_CUSTOMER_ID

and in endpoint url we should set : /customers/CUSTOMER_ID/campaignBudgets:mutate