In this example, you have to fill an order for 125 items. In the primary locations, there are 75 items. The system pulls from the primary location until the supply is depleted, so 75 items are used from the primary location. In the one of the secondary locations, there are 25 items. The system pulls from the secondary location with the most inventory until that supply is depleted and then from the location with the next greatest amount of inventory, and so on. The system pulls 25 items from this secondary location. In another one of the secondary locations, there are 25 items. The system pulls 25 items from this secondary location. The order total of 125 items is fulfilled.