- We have an existing, manually created Purchase Order (not firmed from a planned PO).
- Master planning runs and identifies future demand from Production Orders.
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?
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.
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.
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?

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