Hello,
Thank you for reaching out to support and sharing the details to troubleshoot the issue. Based on the documentation to create the
Universal App Campaigns it looks like you are missing some of the fields required. The bidding strategy types that are supported are listed in the Preparation section of
the guide. I have attached the request and response logs from my testing for your reference. Could you please give this a try and let me know if you encounter any issues?
Regards,
Bharani, Google Ads API Team

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