“Quantity control” . . . “item balance integrity” . . . “record accuracy.” Each of these terms means the same thing to a manufacturer: the ability to know what you have in raw material, work-in-process, and finished goods, and how to find it when you need it. The accuracy of inventory on-hand balances are of great importance to any manufacturer, especially those operating within a closed-loop MRP II system. In an MRP II system, inventory record accuracy determines the level of system performance and serves as a clear measure of the system’s quality. Quantity Control, Just as Important as Quality Control