The key for success in mass production is consistency; the control of variables. One key variable that is difficult to control is the integrity of accounting for materials. Not all materials are used in the way that MRP intended. Materials can be scrapped, spoiled, damaged or even just lost. Materials are often used for products other than those intended and more. In addition to simple materials issues, demand patterns to the factory have changed significantly in recent years. There is no longer a series of distribution warehouses; the trend is moving towards central storage for direct customer shipment. The lead-time between short-term customer demand change and the demand pattern that the factory sees is now much tighter than ever before. ERP & MRP cycles therefore need to work in much shorter time frames, often with a greater number of models and variants. Inventory accuracy becomes a much more critical issue. The Valor Warehouse Management System provides a supply chain solution designed to enhance the operation of MRP and ERP by taking control of material inventory across the entire factory operation, providing accurate inventory management. The key starting point for this solution is to provide internal warehouse management and control.