>From April 10, our calls to the AdGroupService started to fail with the
error "AuthenticationError.CLIENT_CUSTOMER_ID_IS_REQUIRED'. I have verified
that our code has not changed and that our clientCustomerId is set on our
requests. We are calling version 201802 of the AdWords API -
Could you confirm if something has changed that we need to address or if
this is an issue being dealt with?
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