What are product sources and can one product have several?

The same polo from two suppliers. Pick by price, stock or preference. Every listing carries its sources: one distributor's offer, another's, your own stock. Live pricing and inventory from each, on the location's account, never cached. Route the blanks to whichever source you'd rather buy from this month. When one is short, the other is already on the listing, and the store never showed an out-of-stock the network could have avoided. HQ can rank sources by preference for the network; a location can override where the lock mode allows it. The PO always raises on the location's own account.

What it used to cost you: Checking two supplier sites by hand before every quote.

The feature is called Sources. It runs on the same rails as everything else here: one catalog, one price list, one cockpit, your name on the front.