[FIX] stock: rounding issues

Followup of rev 383947646f5652804bd6bbc764380a890e6f4a8d

Let's say you have 6 units and you try to reserve a dozen while the
rounding of the dozen is 1.0. The previous commit correctly only allows
to reserve 12 units, and handle correctly forced quantities in other
compatible UOM, all that with extra moves/backoders.

But we missed an important issue: if now you have 12 units, you will
reserve them. If these 12 units are split across quants, i.e. some are
in another sublocations or are assigned a special lot_id, then we'll
again have rounding issue because the reservation was always expressed
in the move's uom while sometimes it is not possible to go back and
forth between the move uom and and the product's uom. In other word,
we'll reserve 12 times 0 dozen and get stuck at the next step.

This patch now only reserve a quantity if the quantity is expressible in
the rounding's UOM. If this quantity is split across multiple move
lines, we'll make the move line reserved in the UOM of the quants if
necessary. We also do not apply the rounding down -> halfup dance if
`_update_reserved_quantity` is called with the force argument set as
True (meaning, in an mto scenario). The change in
`_prepare_move_line_vals` will make the move lines in the uom of the
qants and everything should be good. With the last change, we need to
adapt the test added by the previous patch, else we won't  be able to
make a chain of 2 move moving producst tracked by serial number if the
rounding of the dozen is set at 1.0.

opw-1835186
opw-1835946

0 files changed, 0 insertions, 0 deletions