Problem case :
- Create a product with MTO and Buy route activated.
- Create a Sale Order containing this product.
- Confirm the Sale Order, this will generate a Purchase Order for this
product.
- Go to Alternatives -> Create Alternative -> Select another vendor &
select "Copy products".
The alternative PO won't be linked to the Sale Order, as this link is
done through the relation `created_purchase_line_id` <-> `move_dest_ids`
respectively on the `stock.move` and the `purchase.order.line`.
The only way to enable multiple Purchase Order to be linked to a single
move is to extend the number of `created_purchase_line_id` linked to a
move, hence changing it to a Many2Many relation.
Then, when an alternative PO is created, we link the original PO lines
`move_dest_ids` to the newly created PO lines, which correctly links the
SO and the alternative PO.
closesodoo/odoo#106411
Related: odoo/upgrade#4116
Signed-off-by: Arnold Moyaux (arm) <arm@odoo.com>
clesgow
706f9286f4