Until recently, the planning capabilities of retail supply chains were very different from those of most of their manufacturing counterparts. Most retailer’s store-level replenishment system can robustly plan consumer sales, but these system generally calculate only today’s orders. They have no capability to store ordering needs beyond the current order, much less orders next week, next month or next season. Retailers generally employ DCs to optimize freight handling and allocation of products to stores. Most retail DC replenishment systems forecast shipment to based upon DC historical shipment, without reference to a store-level order forecast and without accounting for current store selling or current store overstocks