Google has added a brand new bullet level within the structured data carousels (beta) help documentation round easy methods to mark up classes with many gadgets with that structured information. That is primarily based on examples pages akin to paginated content material or infinite scroll.
Google added this new line beneath the “guidelines” part”:
Mark up all gadgets which might be on the abstract or class web page. For paginated classes, add an ItemList to every subsequent web page and embrace the entities which might be listed on that web page. For infinite scroll, give attention to marking up the entities which might be initially loaded within the viewport.
Here’s a screenshot, I highlighted what was added:
Google said they added this as a result of they “obtained a query by means of our suggestions button about easy methods to implement this markup for classes with many gadgets, akin to paginated content material or infinite scroll.”
Discussion board dialogue at X.