The Material Requirements Planning (MRP) module enables you to plan material requirements for a manufacturing or procurement process based on the re-evaluation of existing inventories, demands, and supplies on changing planning parameters (such as lead time determination, make or buy decisions, and holiday planning).

MRP calculates gross requirements for the highest bill of materials (BoM) level, based on existing inventory, sales orders, purchase orders, production orders, forecasts, and so on. It calculates gross requirements at the lowest BOM levels by carrying down net parent demands through the BOM structure. Dependent levels might have their own requirements, based on sales orders and forecasts.

The results of the MRP run are report and recommendations that fulfill gross requirements by taking into consideration the existing inventory levels and existing purchase orders and production orders. The MRP run also takes into account predefined planning rules such as Order Multiple, Order Interval, Minimum Order Quantity, Inventory Level, and so on.