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roll forward period and rescheduling horizon


Could comeone please explain to me the meaning of roll forward period. The F1 help is a bit too concise. I mean looking forward from todays date how does the roll forward period wipe out firmed planned orders ? Also why would anyone want to wipe out firm planned orders and where is the roll forward period mentioned ?

In case of rescheduling horizon there is a tolerance limit stated for rescheduling in and rescheduling out. The F1 help says that in this period there are no rescheduling messages created for procurement elements that should be rescheduled and thus the system prevents excessive rescheduling messages from being created. If that is the case then how would the planner know what to reschedule if the procurement element lies within the tolerance period, ?


Former Member
Former Member replied


Only planned order is manually created, so it is firmed. After that it is no longer used for produce a material. In MRp run also system will not delete this planned order because it is firmed.

However if you want to delete old firmed planned order, you can use roll forward period. Say 2- means, system will delete old planned order which are available in 2 days before from today.

Rescheduling horzon:

Assume a material having manually created production order with qty100 no's on 10.10.08. Say you have created PIR for 100 no's for that material on 08.10.08.

So in MD04 screen, system will propose to reschedule the prod order to 08.10.08 which is available on 10.10.08

If you put 2 days tolerence means, system will not propose to reschedule. Because 10.10.08 is within tolerence limit. If prod order is on 11.10.08 means system will propose to reschedule.



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