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Schedule line date changes after each MRP run

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Dear Experts,

Clarification needed on how the system plans the MM schedule lines.

Setting: Start in the past not allowed.

              3 days for processing of order

The issue is after each MRP run the system is moving the schedule line to the current date + 3 days for processing + the planned delivery time.


If the schedule line is not firmed, after each MRP run ( which happens everyday) the system is moving the schedule line and then giving an alert saying the " order has to be rescheduled to the previous day"


on the second day after the mrp run the system moves the schedule line again by one more day and gives the rescheduling date as " -2 days from today"


this change is happening every day after the planning run. - because of this there are really no backorders ( schedule line in the past ) in the system. we were not able to know if the vendor is actually delayed in this case.


can you kindly suggest what went wrong here ??

we are using strategy 10 for the planning of procured parts. Let me know if more info is needed.

Note: we are also using stock transfer process for some procured parts. there too the PR date gets changed after each MRP run. There there is no lead time in this case. the order is placed on the same day as the requirement as both plants are nearby. There the PR date is changing everyday to the current date.

your advice would be of great help

thanks

Nagendra Kumar

Accepted Solutions (1)

Accepted Solutions (1)

Caetano
Product and Topic Expert
Product and Topic Expert
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Hello Nagendra

It is possible to define a "firm zone" for schedule agreements and MRP will not change the schedule lines within this firm zone, depending on the value defined for the field "binding on MRP".

Check the following threads for more details:

BR

Caetano

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Hi Caetano,

thanks for your suggestion

Yes, we use firm zone for few of the vendors. there the system don't change the schedule lines.

Also for the stock transfer PR's there is no firm zone and the lead time is one day. in this case it changes everyday after the MRP run.

the stock transfer PR's leads to the creation of Schedule lines from the source plant. Since this PR gets changed everyday. the alerts coming out of MD07 gets changed and we really did not know if this order is delayed or not.  In the source plant we use the firm zone to avoid moving the schedule line. But then the alerts are always not correct.

is there any setting which helps in not moving the PR everyday without using " start in the past"

thanks

Nagendra Kumar

Caetano
Product and Topic Expert
Product and Topic Expert
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Hello

You can use an MRP type with automatic firming, such as P1, and define a planning time fence.

BR
Caetano

Caetano
Product and Topic Expert
Product and Topic Expert
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Is this issue solved? If so, can you please close the thread?

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Sorry for the delayed reply..

Thanks for the info.

only by using the firm zone or using P1 MRP type the schedule line is not changed.

otherwise the system keeps moving the order everyday and doesn't allow anything in the past.

thanks

Nagendra Kumar

Answers (0)