MRP and make-to-order

Oh, well, there are a ton of things that can go wrong…

Dates are a big one. Check the date of the revision vs. the date of the RELEASE of the MTO order (not the date on the line).

I had made this list a long time ago:

Why Don't I See Demand?

  • Sales Order
    • Common problems
      • There is no sales order for this
      • Ship By date is not set for that release (or is not accurate)
    • Rare problems
      • Sales Order release is not Firm (look at release tab)
      • Release is not checked as Make Direct
      • Release is closed
      • Quantity on the sales order line is zero
  • Bill of material (Engineering)
    • The part does not exist
      • Just because the part number is on the sales order does not mean it is a real part in the database yet (not in part master)
    • No revision is approved for the part
    • There is no method (use Method Tracker) for that revision of the part
    • Effective Date of a revision is later than the start date of the sales order line that needs it
      • e.g. Order line (release is for January 12 and calls for a method that is effective January 16 (even if today is January 25)
      • And I am assuming that this revision is the only approved revision. In truth, you could have multiple approved revisions, with some dated in the future and others effective now.
      • This applies to all levels of a BOM
        • It does not apply to purchased parts
    • A component is inactive
  • Individual part problems
    • Qty Bearing is unchecked on the Sites tab of the Part screen
    • Phantom BOM is checked on the Sites tab of the Part screen
    • Process MRP is unchecked for manufactured parts
    • Generate Suggestions is unchecked for purchased parts
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