Calculating Procurement Quantity (SAP Library - Material Requirements Planning (PP-MRP))

Calculating Procurement Quantity

Implementation Options

The system calculates procurement quantities in MRP. The system determines material shortages for requirement dates in the net requirements calculation. Receipts must now cover these shortage quantities. The system calculates the receipt quantity in the lot-size calculation, which is carried out during the procurement quantity calculation.

Prerequisites

You have defined the required lot-sizing procedure in Customizing for MRP in the IMG activity Check lot-sizing procedure.

You have assigned the required lot-sizing procedure to the material in the material master (MRP 1 view) and, if necessary, have specified additional restrictions:

Minimum lot size (minimum procurement quantity pro lot)
Maximum lot size (maximum procurement quantity pro lot)
Rounding value (The procurement quantity must be a multiple of this value)
Rounding profile (staggered rounding values)

You have entered values for calculating scrap in the material master or the BOM.

Process Flow

The system adjusts the determined shortage quantities to match the parameters of the required lot-sizing procedure and thus determines the lot size.

If you have made an entry for scrap, the system calculates the scrap quantity and settles this against the lot size.

If you have defined a rounding value or rounding profile, the system rounds up the lot size and thus calculates the procurement quantity.

If you have made an entry for scrap, the system calculates the scrap quantity again and settles this against the lot size in order to determine the yield.

Result

The system uses the result of the procurement quantity calculation as the quantity for production or procurement of the material. This is made up of the estimated yield and scrap. You can display and change the procurement quantity in the procurement proposal. The estimated yield and scrap are displayed in the MRP list and the stock/requirements list.