The person responsible for a group of materials within MRP in a plant or company.
Any material that takes part in material requirements planning must be assigned to an MRP controller.
An MRP controller is responsible for procurement operations in a plant / site. A plant / site can be "divided up" among a number of MRP controllers responsible for the procurement of different materials / articles. An assignment to a purchasing group is made in the user master of every MRP controller. If an MRP controller has ordering autonomy, the purchasing group is copied to the purchase order.