Currently the Default Warehouse field on the User Profile (SM203010) screen only gets used by the Warehouse Management feature.
I'm working with a customer who would love for the Default Warehouse to get used on other screens as well. They have multiple Warehouses, but each user primarily works in one Warehouse. The Stock Items get used by multiple Warehouses so they can't set a default Warehouse for the Stock Item.
Specifically they would like the Default Warehouse to get used on the Purchase Orders (PO301000) screen so that when a user enters an Item on a Purchase Order Line, Acumatica would default the Warehouse from the Default Warehouse field on the User Profile (SM203010) screen.