CAMPAIGN_OBJECTIVE_MISMATCH Campaign Objective Mismatch

You're trying to perform an action that conflicts with the campaign's objective. For instance, trying to add app install tracking to a TRAFFIC campaign, or using catalog targeting under a non-CATALOG_SALES objective.

What causes this error?

You’re trying to perform an action that conflicts with the campaign’s objective. For instance, trying to add app install tracking to a TRAFFIC campaign, or using catalog targeting under a non-CATALOG_SALES objective.

How to fix it

Ensure the ad group settings, creative types, and optimization goals all align with the parent campaign’s objective type. If the objective is wrong, you’ll need to create a new campaign with the correct one.