Records a delivery against an approved (or partially received) purchase order: creates a numbered purchase receive (PR/...), increments stock at the PO's location and updates each line's received quantity. The PO moves to partially-received or closed depending on outstanding quantities. Receiving more than the ordered quantity is rejected unless the company's over-receive setting is enabled. Depending on the company's purchase settings, a supplier invoice number may be required on the PO before receiving (400 otherwise). Requires update-purchase-orders plus the create-stock-receives permission.