Using MRP to make multiple jobs from one sales order line

Epicor ERP 10
8

If it’s something you are planning in the short horizon during testing you might need to fill that out as well on the far right there. Below are my notes from the last time I was doing trial & error testing.

Rules we’ve discovered playing with the schedule. Should be considered BPMs at some point on Part and Job

  • Min Max and Safety must be a multiple of the Lot Size
    • a little bit about Epicor’s Min/Max/Safety settings. MRP not accounting for Sales order or Forecast Demand
      1. Epicor is PREDICTIVE… it doesn’t wait till you run out. It takes action before you actually run out. This is why it is not really called a “reorder level” like some systems. If it sees that your order that is two months out will put you below min, it will tell you to order more, even though you are not yet below safety.
      2. Safety is “special”… if you EVER get below safety, MRP considers this to be catastrophic, and will suggest an IMEDIATE order to fulfill, even if you have no future demands.
      3. MIN is treated more like a reorder point (except is is predictive) but, if you have a leadtime of 30 days, and if you have the “Allow Consumption of Minimum” setting to TRUE, then the system will not treat it as an emergency, as long as you have a PO or JOB that is scheduled to finish before the leadtime of 30 days. In other words… Minimum of 100, Stock of 100, with a leadtime of 30, and you have a PO to purchase 25 more at 25 days out… if you have a demand that consumes 1 piece, you only have 99 (below min), but since you will fix that within the leadtime, it will not tell you to fix it. IF you did this same thing with Safety stock, it would give an IMEDIATE SUGGESTION for a PO to buy 1 more TODAY, even though you already have a PO.
  • Lot Multiple is the grouping of qty we want produced (example 50 per pallet and we want to produce in full pallets we would set this value to 50)
  • Min Lot Size defines the minimum we want to produce per job (example 2 pallets of above example for any given job we would want 100 as the value here)
  • Max Lot Size defines the maximum we want to produce per job (example we don’t want to produce more than 4 pallets of the above examples at a time we would set this value to 200)
  • Jobs that are hand created must be set to produce in a multiple of a Lot Size
  • Re-Order to Max can cause you to overshoot Max on hand
  • Re-Order to Max will force a job to re-order to max not across multiple jobs, to control massive jobs we should set Max Lot Size.

Time Phase fields to ignore (ope! just kidding the UI and help indicate these to by purchasing only but really it impacts inventory as a whole)

  • Min Order Qty is Purchasing only
  • Lead Time is Purchasing only
  • Days of Supply is Purchasing only

Schedule boards

  • Resource Schedule Board load level by setup group works well
    • Shows you if your leveling makes jobs late or not.
    • Every time you run calc global sequence you lose this load level.
      • What should a Schedulers day look like?
      • Is load leveling a daily process?
      • Should MRP and Scheduling run as What-If at night not against the real schedule?
      • How often do you run calc global sequence?
  1. Planning workbench to start the day
  2. Consider not releasing all jobs
  3. Unreleased jobs will still request materials
  4. Clean up the deltas and receive time to part class
  5. CTP
  6. What is Production Activity Plan Maintenance?
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