Hi, You are correct that the usual cause of this error is you are passing an incorrect/non-existing client customer ID on the request header of your transaction.
So that I can further check the issue, could you provide the complete SOAP request and response logs together with the customer ID via Reply privately to author option? You can enable the SOAP logging by referring to this section for the Python client library. Regards, Ejay Google Ads API Team ref:_00D1U1174p._5001UHGMFW:ref -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog: https://googleadsdeveloper.blogspot.com/ =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/zaSSg000000000000000000000000000000000000000000000PXNII6001F75_SpiRjCOqA47_TG2mQ%40sfdc.net.