The document defines material requirements planning (MRP) as a production planning and inventory control system used to manage manufacturing processes. MRP determines the quantity and timing of dependent demand items needed based on a master production schedule, bill of materials, and inventory records. The objective of MRP is to ensure materials are available for production and products are available for delivery to customers while maintaining the lowest possible inventory levels. MRP plans manufacturing activities, delivery schedules, and purchasing to accomplish the master production schedule.