Unexpected AuthenticationError.CUSTOMER_NOT_FOUND

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Oksana Sulyma

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Nov 6, 2020, 9:10:55 AM11/6/20

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Hi Google Ads support team! I need your assistance on AuthenticationError.CUSTOMER_NOT_FOUND issue. We experience it for the one client of us (have the same code working correct for hundreds of other clients). The client has access to Google Ads UI with the same credentials and we need your help to understand where the issue could be. Will be happy to share request/response details privately.

Thanks!

Oksana

Google Ads API Forum Advisor Prod

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Nov 6, 2020, 4:26:04 PM11/6/20

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Hi Oksana,

Thank you for reaching out. It’s most likely this account is already cancelled or you put an invalid client customer id in the header. If it’s the former one then your account has been deactivated due to the inactivity for a long time. You could refer to this article on how to reactivate the cancelled accounts. If it’s the latter one then specify a valid client customer id and make the API call again.

Thanks and regards,
Xiaoming, Google Ads API Team

Xiaoming
Google Ads API Team