Im trying to setup ecommerce tracking and there is something i dont understand. In Google Analytics site, in reports->Monetization->Overview, there is a widget called "Item Views by Item promotion name" - I dont know why its empty.
At bottom there is a "view promotions list" in it, and there i can see the promotions sections from my homepage are listed there. Does it count item views from the "view_promotion" event items, or need some promotion property in a view_item event on detail page? In both cases i set items array, where i have both item_id and item_name set - should i set item_list_name in view_items as described here? https://developers.google.com/analytics/devguides/collection/ga4/reference/events#view_item
Please provide short snippet for events needed to fill that widget with data, im lost. Or any idea which events and how to use for this ?
(i use GA4 GTM)