Hi there - I know that my question here is quite general but I’m not sure where to start…
I’m in a manufacturing business running Nav. We run MPS and MRP every Sunday night. On average we get a total of 8366 action messages to work through for the week which is just not practical. On a very similar business running an old BPCS system for the same period we used to get approx 150 messages / week!
This is obviously a symptom of our set-up but what I would like some assistance with is where to start tinkering with this. Below is a summary of the types of action messages we get on a weekly basis. For this week’s plan we altered the dampening and saw a shift in the messages between new and re-schedule. But I’m not sure if that had the desired effect.
I also notice that in looking at an individual material we get conflicting messages every week - order, cancel, reschedule out, bring forward, order again etc.
One parameter I was thinking of changing was the re-order cycles on individual items. Most of these are set as 1W - weekly. I would’ve thought this should be 1M - monthly. Any comments on that?
Also, our MRP is run on top of MPS - the planners do not run MPS, move production plans around and then run MRP. So I guess Nav is planning for unlimited capacity (we don’t have capacity planning in the system) and this might be the cause of so many action messages?
Ref. Order Type Action Message 22/03/2009 30/03/2009 7/04/2009 14/04/2009 20/04/2009 27/04/2009 4/05/2009 Grand Total
Prod. Order New 3,889.00 4,084.00 2,873.00 4,060.00 173.00 2,442.00 1,946.00 19,467.00
Cancel 44.00 25.00 58.00 99.00 14.00 74.00 73.00 387.00
Change Qty. 12.00 28.00 24.00 25.00 1.00 121.00 97.00 308.00
Resched. & Chg. Qty. 103.00 77.00 124.00 142.00 20.00 145.00 98.00 709.00
Reschedule 87.00 86.00 56.00 96.00 16.00 139.00 113.00 593.00
Prod. Order Total 4,135.00 4,300.00 3,135.00 4,422.00 224.00 2,921.00 2,327.00 21,464.00
Purchase New 5,191.00 5,626.00 4,128.00 5,352.00 5,381.00 3,983.00 2,917.00 32,578.00
Cancel 216.00 351.00 376.00 182.00 210.00 325.00 327.00 1,987.00
Change Qty. 41.00 61.00 36.00 55.00 54.00 67.00 133.00 447.00
Resched. & Chg. Qty. 132.00 140.00 136.00 161.00 140.00 172.00 104.00 985.00
Reschedule 25.00 25.00 22.00 34.00 36.00 49.00