E1: 34: MRP Generates Excess Planned Order Requirements For Items Setup with Periods of Supply, Min and Max Multiple Quantities (R3483) (Doc ID 2205572.1)

Last updated on SEPTEMBER 22, 2023

Applies to:

Symptoms

R3483 is not calculating sufficient quantities to cover requirements when the item branch record has Order Multiple (MULT) > 0 and Order Policy Code (OPC) = 4. Removing the Order Multiple and rerunning R3483 generates the correct planned order quantities.

Expect that POS item be planned correctly, independent of forecast consumption planning fence rule or min, maximum, or multiple quantities, by creating expedite, defer, increase messages as appropriate. Recognize that a decrease message is not a valid action message for periods of supply item.

The issue can be reproduced at will with the following steps:
1. Create fresh planning data item setup as Period of Supply item using min, max, multiple quantities.
2. Set combination of Sales and Forecast demand.
3. Run MRP and review messages and time series calculations. Planning seems to drive to an overall shortfall. This is incorrect.
4. Process (firm) multiple supply orders.
5. Adjust dates and quantities to force MULTIPLE action messages against firm orders.
6. Rerun MRP. Review Messages and time series calculations. Planning seems to drive to an overall excess of requirements. This is incorrect.

Changes

Cause