Hi, Thanks for reaching out to the Google Ads API Forum.
In Google Ads API perspective, you’ll need only to authenticate API requests with OAuth2 credentials using the email with the appropriate access to the accounts (customer_id) you will specify in your requests. Please make sure you use the correct login-customer-id that you used to generate the OAuth2 credentials, as an OAuth2 access token that grants access to the API. With regards to sending email invites to 20 accounts, note that the maximum number of pending invitations is 20. You can see your pending invitations in your manager account under Settings > Sub-account settings. If your manager account already has 20 pending invitations, then you cannot invite additional client accounts. However, as solution to reduce the number of pending invitations, you can ask administrative users on the requested accounts to approve the linking invites or you can revoke the invites if they are no longer needed. Also, you may consider bringing your manager account under the account limit, you must cancel some accounts or unlink accounts from your manager account. Regards, Yasar Google Ads API Team ref:_00D1U1174p._5004Q2d17E4: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 "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 on the web visit https://groups.google.com/d/msgid/adwords-api/b0ROF000000000000000000000000000000000000000000000RFL4OE00K_Q2E4qiRA2KtZlXo7G7hg%40sfdc.net.