Allocate Received Stock to the Oldest Orders First

When stock is reserved against purchase orders, share incoming deliveries fairly as they arrive. When you receive a purchase order delivery, the jobs, orders, or work orders reserved against it are allocated on an oldest-first basis. This ensures the orders that have been waiting longest are fulfilled first, giving you a consistent, predictable way of distributing incoming stock rather than leaving it to chance. The result is fairer allocation and less risk of older orders being held up while newer ones are met.