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Available to promise  A feature of MRP systems that identifies the difference between the number of units currently included in the master schedule and actual (firm) customer orders.
Bill of materials (BOM)  A computer file that contains the complete product description, listing the materials, parts, and components and the sequence in which the product is created.
Closed-loop MRP  The use of actual data from the production system to continually update the MRP system. This feedback is provided so that planning can be kept valid at all times.
Flow manufacturing  Hybrid production planning systems that combine the information integration and planning capabilities of MRP with the response of a JIT kanban system.
Manufacturing resource planning (MRP II)  An expanded version of MRP that integrates finance, accounting, accounts payable, and other business processes into the production scheduling and inventory control functions that are part of a basic MRP system.
Master production schedule (MPS)  A time-phased plan specifying how many and when the firm plans to build each end item.
Material requirements planning (MRP)  The logic for determining the number of parts, components, and materials needed to produce a product. MRP also provides the schedule specifying when each of these materials, parts, and components should be ordered or produced.
Net change system  An MRP system that calculates the impact of a change in the MRP data (the inventory status, BOM, or master schedule) immediately. This is a common feature in current systems.







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