Purchase Orders

What you've asked a supplier to deliver — the document receiving checks against.

Where: Inventory → Purchase Orders

1. New PO: supplier, expected date, then lines — product, quantity, cost.
2. Send/print it; the PO sits open with its expected quantities.
3. When goods arrive, receive against it — full or partial; the PO tracks received vs outstanding until closed.

Buying without a PO is possible (direct receipt), but POs are what make receiving checkable — three-way honesty between what was ordered, delivered and billed.