Hi,
Thank you for posting your concern.
Could you confirm if the said error was encountered in the UI after the creation of the test MCC account? If yes, then you may skip this process as the campaign under the test account will not go live and will not accumulate cost. However, if you continue to encounter issues creating the test account via the UI, I would recommend that you reach out to the Google Ads Product Support team via this
link, for further guidance on UI related concerns or issues.
Then, you may instead try to add new client accounts using the API by referring to this
sample code.
Hope this will help. Let me know if you have further questions.
Regards,
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| Ernie John Blanca Tacata |
| Google Ads API Team |
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