Hi Powell, Thank you for posting your concern.
I would like to inform you that I will remove your initially post as it contains generated API logs. Let me just paste here on my reply the provided description of your concern. Moving forward, the possible reason why this error occurred is due to incorrect user account / email address has been used to generate Oauth2 credentials. With this, please try to use the user account / email address that has access to Google Ads account in generating Oauth2 credential. If the issue persists after trying the provided suggestion, then please provide the following details via Reply privately to author option: email address / user account used to generate Oauth2 credentials customer ID complete request and response logs with request ID generated on your end If you haven't enabled the logging of the API transactions for the specific client library that you are using, then please refer to the specific guide below: Java - https://developers.google.com/google-ads/api/docs/client-libs/java/logging .Net - https://developers.google.com/google-ads/api/docs/client-libs/dotnet/logging PHP - https://developers.google.com/google-ads/api/docs/client-libs/php/logging Python - https://developers.google.com/google-ads/api/docs/client-libs/python/logging Ruby - https://developers.google.com/google-ads/api/docs/client-libs/ruby/logging Perl - https://developers.google.com/google-ads/api/docs/client-libs/perl/logging "Hi, I'm new to Google Ads API and have not been able to make any successful API calls with the test account. 1) created a developer token (from my manager account, where my email is listed as the admin) [https://developers.google.com/google-ads/api/docs/first-call/overview] 2) created a test manager account with the same email as my ad manager account. [https://developers.google.com/google-ads/api/docs/first-call/] 2a) In the test manager account I have created a dummy customer, and within it a dummy campaign 3) Enabled the Google Ads API in the API library [https://console.developers.google.com/apis/library] 4) Created a desktop app credential and obtained the clientID and secret 5) Cloned the google-ads-dotnet from Github, and was able to obtain a refresh token after running the AuthenticateInDesktopApplication 6) Followed the online instruction in modifying App.config and created a GoogleAdsApi.json In my program, I followed the example for the custom json: ConfigurationBuilder builder = (ConfigurationBuilder)new ConfigurationBuilder() .SetBasePath(Directory.GetCurrentDirectory()) .AddJsonFile("PATH\\TO\\GoogleAdsApi.json"); IConfigurationRoot configRoot = builder.Build(); GoogleAdsConfig googleAdsConfig = new GoogleAdsConfig(configRoot); GoogleAdsClient googleAdsClient = new GoogleAdsClient(googleAdsConfig); My 'dummy' customerid is XXXXXXXXXX, and while following the example, I got the following error in the log:" Regards, Ernie John Blanca Tacata Google Ads API Team ref:_00D1U1174p._5004Q2DKkus: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 "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. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/TC9Ms000000000000000000000000000000000000000000000QPFSP700nNpUTIGpTsu5vh_msVtwxA%40sfdc.net.