Hi there, Invalid client is a general Oauth issue that most probably is beyond the scope of this support channel. If you are using one of our client libraries you can check how a proper credential file is filled out by clicking on one of our libraries in the sidebar of our client libraries guide, then clicking on one of the Oauth 'flow' guides. If you are using REST Interface we have our Authorization and HTTP Headers guide for proper setup of credentials.
With that being said did you make certain there are no leading or trailing spaces or wrong style string identity marks in Client Id and Client secret in your settings? You can also look up popular self help websites with this error. Regards, Aryeh Google Ads API Team ref:_00D1U1174p._5004Q2WyiGZ: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/7eE-i000000000000000000000000000000000000000000000R7V5G000z9MChNiDQ4y16fenDS6_rw%40sfdc.net.