Requesting a Desktop Catalog Item That is Linked to a Mobile Catalog Item
If you add a desktop catalog item that is linked to a mobile catalog item to the cart, when you opens the cart, the linked mobile application catalog item will be displayed in the Actions table, and you will be prompted to specify whether or not you want to also request the mobile app. If you select the mobile device, the mobile application will be requested.

If you select to also request the mobile application, both catalog items will be included on the same request, but two different request IDs will be created.