A Facebook catalog stores information about the products you sell and can advertise across Facebook and Instagram.
To create a catalog in Business Manager:
Open Business Settings.
Select Data Sources.
Select Catalogs.
Select Add followed by Create a new catalog.
Name your catalog and select the type of items you sell.
Select Create catalog.
On the left, select any people in your Business Manager who you want to give catalog access to. On the right, choose either Create ads or Manage catalog permissions and then select Assign. If you don't want to give anyone else access to your catalog, select Cancel to skip.
Select any Meta Pixels or app SDKs that you want to connect to your catalog, then select Save.