I'm trying to upload videos using manager account to Brand Account's channel. I found workflow how it could be done here. When I've tried to generate refresh token using OAuthTokenGenerator I've got an error "This client is restricted to users within its organization.". Need to mention that we have requirement for our client to be internal so we can't make it external.
I found that our Brand Account's primary owner email is in the different domain. We changed our Brand Account's primary owner to be within our organization. But it doesn't help we still receiving the same error "This client is restricted to users within its organization." What else should be done to solve this issue?