Hi,
Thank you for reaching out to the Google Ads API support team.
I understand that you are trying to link a Google Ads Manager account to an individual Ads account. I would recommend that you use
CustomerClientLinkService to link a Google Ads Manager account to an individual Ads account. I would recommend that you refer to this
guide for more information.
Hope this helps. If you have any more queries, please feel free to get back to us.
