Hello Teja, I know it is being investigated, but just to let you know some ids.
I am experiencing the same error when querying Google Ads test account 519-086-4594 from within the Oauth credentials created under the Google Ads Manager test account 146-493-7952. The developer token used is linked to the Google Ads Manager account 128-463-3531 that cannot be linked to the test and test manager accounts above. When trying to link 128-463-3531 to 519-086-4594 or 146-493-7952, I am getting the 'The manager cannot create more client accounts' error in the UI. 1. I donot see how the Google Ads Manager account and the Google Ads Manager test accounts are linked to one-another? 2. Somehow, there have been extra accounts created (Google Ads account 185-594-5391 under the Google Ads Manager email address, and, Google Ads account 243-027-5927 under the Google Ads Manager test email address). Both are not test accounts but I also cannot remove them. Maybe something goes wrong in having multiple accounts under the same manager account's email address? Hope to see a solution soon. Kind Regards Lars Hemel -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ 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. 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/ca83b8b7-0452-4a5c-8539-77184268eb5f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.