Hi Naman,
Thank you for reaching out. I see that you are trying to get Campaign Bid Simulations data for campaigns. As mentioned in
this documentation, bid landscapes work with Search Network-only campaigns, Display Network-only campaigns, and Shopping campaigns. For Search Network with Display Select, only information pertaining to the Search Network portion of a campaign is returned. Can you confirm if you are using these campaigns? Can you also provide your customer client ID as well as the complete detailed logs of the request and response so that I can take a closer look? Ensure you
"Reply privately to author" when providing this information.
Regards,
Danica, Google Ads API Team

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