Purchase Order Supplier Return

This module works in the background on purchase orders that involve storable products. It does not add any new menu, screen or button; instead it changes how Odoo handles the validation of stock moves linked to purchase order lines.

When a stock move is completed (for example when you validate a receipt or a return), the module checks the related purchase order line. If that line has a negative ordered quantity and its received quantity is calculated from stock moves, the move is automatically flagged as a refund.

• The check only applies to purchase order lines that are linked to the move.
• The move must be in the done state.
• The purchase line must use the stock moves method to compute the received quantity.
• The ordered quantity on the purchase line must be negative.

As a result, the received quantity on the purchase order is updated to reflect the return, keeping the purchase order figures consistent with the actual stock movements. This is useful when you use negative quantities on a purchase order to represent a supplier return and want Odoo to treat the resulting stock move as a refund rather than a normal receipt.