We support tsv and xml product catalogs in the following format: https://developers.gravityrd.com/wiki/display/RECO/Item+catalog. If you have the catalog you can upload it in the "Database / Feed" menu. First try to upload it manually, and if it's accepted you can set up a recurrent import.
There are also some additional steps which are useful if you are using a product catalog:
- In the "Integration" / "Pages" menu select the "Product page" and go to the advanced options. Switch from "Import item" to "Request parameter only" (see on the attached image) mode to avoid importing the items twice with different parameters.
- Use appropriate item id on the product page based on the description here: https://doc.recoplatform.com/display/GS/Advanced+product+ID+handling