Purchase order lifecycle

The Lifecycle

Transitions Explained

Staff create a draft, issue it and record deliveries. Partial receipts leave an outstanding remainder; receipts or quantity cancellation can eliminate it. Closing cancels all remaining units, while cancellation is reserved for orders with no received stock.

What Cannot Happen

Only drafts are replaceable. Received stock prevents whole-order cancellation, and fully received orders cannot take another receipt.

Concurrency and Timing

Order locking serializes receipt and lifecycle changes. Cancelling an untouched issued order's entire remainder through line operations still labels it received, even though no delivery occurred.