Hi, Thank you for reaching out to the Google Ads API support team.
Please be informed that it is expected that customerClientLinks:mutate and createCustomerClient cannot be used with a developer token that only has "Test Access" when targeting a non-test account. The key here is the distinction between "Test Access" on a developer token and an actual "Test account." The developer token is a prerequisite for any API calls. It's tied to your Google Ads Manager Account (MCC) and is granted by default when you first apply for API access. This token is only approved for use with test accounts. The test account is explicitly designed for testing and is separate from production accounts. Account 1 (account@...): This is a production manager account. You can get a developer token here, but since it's a production account, your "Test Access" developer token is restricted. Account 2 (ratoblaas6@...) is a true test account (as indicated by the red label). The API Center is disabled for this account because Google requires that you use a developer token from a production manager account to interact with all accounts, including test accounts. Also, the DEVELOPER_TOKEN_NOT_APPROVED error means the developer token is only approved for use with test accounts. To access non-test accounts, apply for Basic or Standard access. If your API access is still in the test, the presented issue is caused by making a call against a production account with a developer token only approved for test access. You can apply for Basic Access by following the steps outlined here. Also, kindly create a new Google Ads Manager Account from scratch. This is your "Test MCC" and will have the red "Test account" label in the UI. Under this Test MCC, create one or more client accounts. These will be your "Test Client Accounts," also with the red label. I would recommend you refer to the guide Create test accounts and campaigns to get more information. I hope this helps! Feel free to get back to us in case of any further queries. Thanks, Google Ads API Team Feedback How was our support today? [2025-08-28 07:51:21Z GMT] This message is in relation to case "ref:!00D1U01174p.!500Ht01u5Gvw:ref" (ADR-00331096) -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ 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 "Google Ads API and AdWords 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 visit https://groups.google.com/d/msgid/adwords-api/ziskF000000000000000000000000000000000000000000000T1P1TL00SbCJy3MMQHmN9ppffDuqQw%40sfdc.net.
