The /atg/commerce/gifts/GiftlistManager component has a siteScope property that controls how gift lists are shared between sites. Each gift list is associated with a single site, and items from other sites can be added to a gift list if that site is compatible, based on the value of siteScope. For example, if siteScope is set to the atg.ShoppingCart shareable type ID, an item from another site can be added to a gift list only if the other site shares a shopping cart with the gift list’s site.

The /atg/registry/CollectionFilters/GiftlistSiteFilter component (used by the /atg/commerce/collections/filter/droplet/GiftlistSiteFilterDroplet component) provides site-based filtering of gift and wish lists and the items in these lists. This filtering mechanism is especially useful for wish lists; a customer can have only one wish list, so filtering is needed to restrict the items shown by site.