Hello, When using the CID, you are going to want to use the one from the test AdWords account, not the one from GTM-OAUTH2.
The clientCustomerId header <https://developers.google.com/adwords/api/docs/guides/soap#clientCustomerId> is optional when running CustomerService <https://developers.google.com/adwords/api/docs/reference/v201502/CustomerService>. If you're not going to specify that value you should exclude that header altogether rather than including it as an empty element, so just remove the line that says: <!--Optional:--> <v201:clientCustomerId></v201:clientCustomerId> This will return a Customer object <https://developers.google.com/adwords/api/docs/reference/v201502/CustomerService.Customer> where the customerId <https://developers.google.com/adwords/api/docs/reference/v201502/CustomerService.Customer#customerId> will be the AdWords customer ID of the authenticated user. Note that for all other services besides *CustomerService*, the *clientCustomerId* SOAP header is *required*. Regards, Anthony, AdWords API Team -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/ https://plus.google.com/+GoogleAdsDevelopers/posts =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords 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 Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/adwords-api. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/016b4fee-9063-4d40-be58-02f097604bfe%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
