Creating a product set requires associating a product_catalog_id:
Reading an product set having the Facebook id is easy:
Unfortunately, the response for that request contains 3 fields (id, name and filter).
How can I get the product_catalog_id associated to a product set (if I know the product_set_id)?
PS: The documentation does not help with that: https://developers.facebook.com/docs/marketing-api/dynamic-product-ads/product-catalog#productset