Stock Fix Unpicked Backorder

Overview

This module patches an issue in Odoo 19 where validating a partial stock picking and choosing "No Backorder" causes Odoo to explicitly cancel any stock move lines that have not been manually marked as picked. This cancellation results in their quantity being zeroed out, even if the line's quantity perfectly matched its demand.

Technical Details

Odoo 19's stock.picking validation skips automatically marking lines as picked = True if any other line in the transfer was manually processed/picked. When cancel_backorder=True is provided (via the "No Backorder" wizard), the _action_done method of stock.move cancels moves that are not picked or have <= 0 quantity.

This module overrides _pre_action_done_hook on stock.picking to ensure that any move with a quantity > 0 is automatically marked as picked = True right before the validation logic runs.

Usage

Simply install the module. The fix is applied automatically during the backorder validation flow.