Hi Mayur,
Thanks for reaching out to the Google Ads API Forum.
I understand that you have uploaded the custom list and a similar audience of custom list is not uploaded which has 2M-3M audience size. However, as you mentioned, it is showing eligibility issues, then this is out of our support scope. This forum group helps assisting in the technical implementation of API features and guidances. Since it is more product support related for the eligibility concern, then I would recommend you to reach out to the Google Ads Product support team, via this link, since the appropriate team to provide guidance, and specialized in this aspect.
Regards,
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| Yasar |
| Google Ads API Team |
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