What Is The Issue?

When syncing a Dynamic Ads campaign in the Marin Social platform, you may encounter the following sync error:
 

You could also get the following sync error message "Unsupported post request".

What Causes The Issue?

There can be two reasons for this Facebook message:
 

1. The owner of the token does not have the right permissions on the product catalog anymore.
    
2. The product set used has been deleted.

How To Fix The Issue  

To resolve this error message:
 

1. Navigate to Facebook Business Manager and verify that the owner of the token as Admin access to the catalog.
    
2. Go to the Config tab > Dynamic Ads > Product set and look for the product set. If the product set is not showing in the list, it means it does not exist anymore. Please create a new ad set with an existing product set.