Hi Samuel, Could you confirm if you are using the CustomerService.getCustomers() <https://developers.google.com/adwords/api/docs/reference/v201708/CustomerService#getcustomers>? If so, then in order to retrieve all the client customers (with their clientCustomerIDs) associated to your OAuth2 credential, then do not set a specific clientCustomerId in your request header (or in your property file). If you'll manually set the clientCustomerId in your property file, then you run this method, only the details of the specific client customer will be returned.
Kindly do the suggestion first and let me know if this works. Thanks, Vincent 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 https://groups.google.com/group/adwords-api. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/ed4964fb-86ef-4500-a9bf-5ddd63c33922%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.