Evaluation of optimal ordering method in combination of forecast and order based production

We should consider a process capacity when the re-order system replenishes multi-items under the combination of forecast and order-based production. We propose the new usage of optimal ordering method (OOM). OOM has an effect of decreasing the out-of-stock situation under the limited process capacity. OOM is used at the stock position of the coupling points (CP), and the limited capacity is changed by the order-based production quantity. As a result, the delivery delay of the order-based production does not occur, and the out-of-stock situation of the forecast-based production is not increasing. This new usage of OOM has been successfully applied to an electronics device manufacturing process.