Update Catalog Options – Documentation – Facebook for …

Add Microdata Tags in Item Feed File (Optional) You can use these protocols to add the microdata: OpenGraph — Place the microdata in the header of your website.; Schema.org — Place the microdata across the product page where the products are located.; JSON-LD for Schema.org — Place the microdata within the script tag (see the example below).; Depending on the type of protocol you choose …

https://developers.facebook.com/docs/marketing-api/catalog-setup/update-options