Skip to Content

Archived discussions are read-only. Learn more about SAP Q&A

MRP Planning Run & Forward Scheduling

Hi,

I have a situation where some planned orders that are firmed & within our planning time fence are being rescheduled by MRP.

That reschedule is done in Forward Scheduling, with a schedule start time exactly at the time MRP was ran.

For example, on our last MRP Run at 13:00:00 today:

http://i.imgur.com/DSiJQYG.png

http://i.imgur.com/a4q83BM.png

I am currently not able to reproduce at all by myself, I'm not sure what the initial state of the planned order is when this happens.

When I try to reproduce, the best I get is a Forward Scheduling on 2015-06-09 at 00:00:00 ( so current day, but time in the past).

Here is the result I have on my test on a planned order that was confirmed on 2015-08-08.

The MFBF confirmation creates forward scheduling, but basic dates didn't move.

http://i.imgur.com/PO77cZK.png

After MRP Run on 2015-06-09 at 15:25:00.

http://i.imgur.com/UHv95rg.png

Any ideas what is causing the difference ?

replied

Hi Experts,

Here is my current status on the issue of firm planned orders being rescheduled and basic dates being adjusted even though my OPU5 settings say otherwise. This happens on partially confirmed (reduced) planned orders in Repetitive Manufacturing.

  • Case 1 - Planned Order not planned by production dates (PLAF-PRSCH = ' ') with basic dates within the limit of OPU5 "Start in the Past" settings:
    • In this case, the production dates are rescheduled to respect the basic dates.

  • Case 2 - Planned Order not planned by production dates (PLAF-PRSCH = ' ') with basic dates before the limit of OPU5 "Start in the Past" settings:
    • In this case, the production dates are rescheduled starting from today at 00:00:00. The basic dates are not adjusted.

  • Case 3 - Planned Order planned by production dates (PLAF-PRSCH = 'X') with production dates within the limit of OPU5 "Start in the Past" settings:
    • In this case, the production dates are left alone. The basic dates are adjusted to the production dates.

  • Case 4 - Planned Order planned by production dates (PLAF-PRSCH = 'X') with production dates before the limit of OPU5 "Start in the Past" settings:
    • In this case, the production dates are updated to forward schedule from the time of the MRP run. The basic dates are adjusted to the new production dates.

Now I'm guessing this is all standard and normal way of processing dates in the past for MRP. However, my requirement was for the basic dates to stay to their initial positions in all case to simplify the follow up of the plan. It seems that I need to plan without production dates (MF50 with basic dates in the selection screen settings).

Anyone has an opinion on my conlcusions ? Other ideas ?

Thanks for all your help,

Marc

0 View this answer in context

Helpful Answer

by
Not what you were looking for? View more on this topic or Ask a question