Elements of an MRP System Customers' Inventory Forecasts orders Engineering transactions changes Inventory status Master production file (finished items, schedule (which Bill-of-materials file work in progress, products to produce,in (product structure planned orders) what quantity,and when) and routing) MRP system Planned schedules and various other reportsElements of an MRP System Inventory transactions Customers’ orders Forecasts Engineering changes Master production schedule (which products to produce, in what quantity, and when) Billofmaterials file (product structure and routing) Inventory status file (finished items, work in progress, planned orders) Planned schedules and various other reports MRP system