In reorder point planning, an entry is only created in the planning file and the net requirements calculation is only carried out if stock levels fall below the reorder point. To avoid overplanning, sales orders, dependent requirements, reservations and so on are not usually included in the net requirements calculation as these future requirements are already planned with the reorder level. However, to guarantee that the MRP controller is informed of current issues, the system displays sales orders, dependent and manual reservations and so on.

In certain circumstances, however, it is necessary to include such external requirements in the net requirements calculation for reorder point materials.

The indicator for taking external requirements into account is set in Customizing in the IMG activity Check MRP type for the individual time-phased MRP procedure.

Sales orders and manual reservations are included in planning during the replenishment lead time. In Customizing you can also enter settings for the respective MRP type, so that

• sales orders and manual reservations are included in planning not just during the replenishment lead time but during the whole horizon.
• alongside sales orders and manual reservations various other requirements are taken into account in the material requirements planning.