E1: 34: Multi-Plant MRP Creates Recurring Expedite then Defer Message on Same Firmed Order (R3483) (Doc ID 2556386.1)

Last updated on APRIL 04, 2025

Applies to:

Symptoms

R3483 creates wrong expedite and defer messages on MRP rerun after processing the order messages. When Planning Multi-plant transfers with Min/Max/MOQ and Safety Stock, when there is a excess of supply, MRP will write Expedite Msg. After processing message and rerun MRP, it now writes a Defer for the same order just Expedited.

Steps:
1. Delete the G and L type from 34/MT UDC. Create a new Item MRP109
2. Create Item Branch in M10 Supply Branch with Stocking type M
3. Additional System Info
OPC = 1
Planning Code = 2
Planning Fence Rule = G
Planning Fence = 999
Freeze Fence = 4
Leadtime Level = 4
4. Quantities
Max Reorder Qty = 160
Min Reorder Qty = 40
MOQ =40
Safety Stock = 20
5. Create Item Branch in M20 Demand Branch with Stocking type P
6. Additional System Info
OPC = 1
Planning Code = 1
Planning Fence Rule = H
Planning Fence = 999
Leadtime Level = 4
7. Quantities
Min Reorder Qty = 40
MOQ =40
Safety Stock = 80
8. Create multiple Forecasts in Demand Branch M20 Dates and quantities as given in screenshot
9. Run MRP and Review Planning Messages for Supply and Demand Branch. It looks correct.
10. Supply and Demand screen for both branches after first run looks correct
11. Process Messages for M10 and M20 to get the firm orders (OPs and OTs)
12. Now again rerun the MRP and review the messages for M10 and M20
13. No Messages in M20 which is correct
14. Wrong expedite messages in M10, Since there is no change from the previous run, there should not be any messages. If we try to process these messages and run MRP, we again get wrong Defer messages and this cycles again and again.

Cause