Hi Nino,
Thank you for reaching out. Make sure you've followed the instructions
here for creating the ZIP file and also please check out
this blog post for additional information.
If you've followed both of those and are still having issues, please share your complete detailed request and response logs
via reply privately to author so that I can further investigate the issue. You can find information on enabling logging under your
client library.
Regards,
Mitchell
Google Ads API Team

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