Stock Production Lot Traceability

This module adds traceability information to the Lot/Serial Number form in Odoo. On the form of any lot or serial number you get two new smart buttons in the button box: "Consumed" and "Produced". Each button shows a count and is hidden when the count is zero.

• Clicking "Consumed" opens the list of lots or serial numbers that were used, directly or indirectly, to produce the lot you are looking at.
• Clicking "Produced" opens the list of lots or serial numbers that were made, directly or indirectly, from that lot.

The calculation follows the links between consumed and produced move lines of completed stock moves, and it goes through several levels, so intermediate manufacturing steps are included, not only the immediate ones. Only completed moves are taken into account.

The module extends the stock.production.lot model with the computed fields produce_lot_ids, produce_lot_count, consume_lot_ids and consume_lot_count, and it also updates the stock.move.line model so that these results stay up to date when move lines are created or changed. No new menus are added; everything appears on the existing Lot/Serial Number form.