Hi Sergey, Thank you for reaching out to us.
With regard to your concern, please do note that the API request to create campaign budget is for client account only. Since you're submitted a n API request using MCC account, then this is the reason why the OPERATION_NOT_PERMITTED_FOR_CONTEXT error occurred.. For USER_PERMISSION_DENIED, this error occurs when the authorized customer does not have access to the operating customer. You may check this guide for further details to the said error. Regards, Reminder: Share your feedback about the Google Ads (AdWords) API! Take the 2021 Google Ads API and AdWords API Annual Survey Teejay Wennie Pimentel Google Ads API Team ref:_00D1U1174p._5004Q2RvRNp: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/_hVlG000000000000000000000000000000000000000000000R30F3C00aPy5VGpfQZ2qqqEhXN9_iw%40sfdc.net.