# place breakpoint in `ord:OnSave` event
# create an order -> verify, that `ReserveItems` method is called for created order (before this fix the ID=0 was used)
# edit an order -> verify, that `ReserveItems` method is called for edited order
# create another order
# edit both orders together -> verify, that `ReserveItems` method is called once for each order (before it would be called 3 times)