Hi,
Thank you for reaching out to the Google Ads API support team.
Upon reviewing your concern, I understand that you would like to fetch customers in your ad manager account. You can retrieve the customers by using the customers.listAccessibleCustomers method, which returns resource names of customers directly accessible by the user authenticating the call. I would suggest referring to this document for more information.
Additionally, you can list accessible customers using the Google Ads API without specifying a customer ID in the request.
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Google Ads API Team |

SELECT customer.id, customer_client.id, customer_client.descriptive_name, customer.descriptive_name, customer.status, customer_client.status FROM customer_clientI have tried to replicate the above query from my end using my customer ID and I got a successful run on the query and the results are returned.
