Hi.Query on rescheduling proposal

[Former Member]

Hi.I have a doubt on "On what basis the system chooses the MRP Element which is proposed for 'reschedule in' whenever there is sudden requirement.

[Former Member]

Rescheduling Horizon:

It is defined in Plant parameter tcode OPPQ. For rescheduling check use tcode OMDW.

In rescheduling check system will consider firmed elements ie, Firmed planned orders, Production order, Firm purchase req, QM ins lot.

For easy understanding we can assume having firmed planned order qty 10 no’s on 29.04.2008.

Sales order qty 10 no’s date on 20.04.2008.

Rescheduling horizon say 20 days.

When mrp run system do net requirement calculation ie, Plant stock + Firmed receipts – issues – safety stock = Available stock.

If you mention 100 days in horizon system will consider the firmed planned order on 29.04.2008. System won’t create any procurement proposal.

And system proposes to reschedule the firmed planned order to 20.04.2008

Regards,

Dharma

[Former Member]

Hi Darma,

thanks a lot for the reply.My doubt is as you mentioned

there is a requirement for 10 items on 20.04.2008

and there are three firmed receipts 2 on 29.04.2008 each for 9 units and one on 30.04.2008 for 10 units.Now which MRP element will be considered for rescheduling proposal.

please advice.

[Former Member]

Hi,

System proposes to reschedule 2 firmed receipts on 29.04.2008 .Because to obtain 10 no's ( 9 + 9) .

System will give message 20 cancel process ie, excess receipt to the firmed receipt on 30.04.2008 ( Not proposing to reschedule)

Regards,

Dharma

[Former Member]

Hi,

Rescheduling horizon defines the period for bringing the receipts that should be

taken into account for rescheduling.

There are two process

1.Reschedule in - Bringing the process forward Exception message 10

1. Within the recheduling horizon the system checks whether after the

requirement a firmend receipts exists which can be used to cover this

requirement.

2. Then the system displays the message Bring the process forward and

exception message 10

3. The net requirement calculation uses the receipt and the system will create

new procurement proposal only if there is any shortage.

4. For this we need to define a tolerance value for bringing the process in

tcode OPPQ /OPPR

The system checks compares this value with the difference between order

finish date- Reqmts date.If this difference is more than the tolerance value

the system issues the message for the MRP element to bring the process

forward if the reqmts date lies before the firmed receipt element date.

5. Same process for Postponing the process Exception message 15.

During MRP the system carries out Rescheduling check automatically. No Tcode is reqd.

Rescheduling check is to change the dates of already existing firmed receipts

which were not planned on the same day as the requirements day to suit the

requirement.

Pradeep