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Supply chain | Supply Chain Management, Commerce
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Master Planning – Does a manually created PO always peg forward to future demand only?

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Posted on by 147
Hello community,
 
I would like to confirm a specific behavior in D365 F&O (Planning Optimization) related to pegging of manually created purchase orders.
 
Scenario:
- We have an existing, manually created Purchase Order (not firmed from a planned PO).
- Master planning runs and identifies future demand from Production Orders.
 
Question:
Is it correct that master planning will only peg this manual PO to future demand (e.g., a production order requirement date in the future), and never backward to a past or already-consumed demand?
 
What we have tested:
We tested across multiple coverage group settings (Requirement/Period, action messages, ) and in all cases, the manual PO only pegged forward to future demand. It never pegged to any past demand.
 
What Microsoft Learn implies:
From the Net Requirements and Pegging documentation, the framework is sorted by requirement date and is forward-looking by design. The coverage time fence is always calculated forward from the current date. Positive/negative days also operate on future-facing logic.
 
However, we could not find a single Microsoft article that explicitly states: 'A manually created PO will never peg backward to past demand.'
 
Could anyone confirm:
1. Is this forward-only pegging behavior by design and documented anywhere officially?
2. Is there any edge case or setting where a manual PO could peg to past demand?
Any pointers to official Microsoft documentation, FastTrack notes, or TechTalk sessions would be greatly appreciated.
Thank you!
I have the same question (0)
  • RS-22012258-0 Profile Picture
    147 on at
    Here is my scenario: 
     
    Inv falls below safety stock on 4/15
    I have planned production order to be received on 4/15
    I have purchase order receiving on 4/25
     
    I have tried various setting in coverage group but I haven't been able to generate an advance message on the po to fulfill the planned production order on 4/15. It always pegs to a planned production order after 4/25. 
     
    I even tried the strict safety stock parameter by setting it to yes. But still it didn't work. Any suggestions would be welcome. 
     
    Thanks
     
     

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