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MRP and production order basic dates

Hi,

I see that the MRP takes into account the basic finish date of the production order and plans as per that. However I want it to plan taking into account the production finish date. Is that possible ? Also shoudlnt MRP look at the production finish date as that is the most accurate date without the float buffer which leads to the basic finish date ?

Thanks

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4 Answers

  • Best Answer
    Posted on Jan 08, 2014 at 10:20 AM

    Hi,

    In customization for scheduling parameters (transaction OPU5 for planned orders and OPU3 for production orders) you can specify whether basic dates are adjusted to operation dates, furthermore whether dependent requirements are scheduled for the operation dates or basic dates. Please read the F1 help of the adjust dates parameters in the customization step and try if necessary.

    Regards.

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  • Posted on Jan 08, 2014 at 09:21 AM

    Hi,

    Yes, it is possible. Please check this help page from SAP about lead time scheduling during MRP run: Calculating Production Dates (Lead Time Scheduling). There you can find the prerequisites and detailed process flow of the scheduling.

    Regards,

    Julian

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  • Posted on Jan 08, 2014 at 05:50 AM

    Hi GS,

    You can please go through with below details that may help you for your querry,

    Details which are given below is posted in one of thread and replied by Mr. Nanda,

    Please find the link formore detail : http://scn.sap.com/thread/965067

    Hi,

    Basic scheduling :

    1.Basic dates are calculated.

    2.Exact to day.

    3.No cap reqmts are generated.

    4.uses the inhouse production time from material master.

    5.carried out automatically during planning run.

    In basic date calculation ( order start date/ order finish date ) the system always

    calculates backward scheduling.

    1. From the reqmts date the system subtracts the GR processing time to

    calculate the order fininsh date.

    2. From the order finish date the system subtracts the inhouse production time to calculate the order start date.

    3. From the order start date the system subtracts the opening period given in scheduling margin key to calculate the order opening date.

    Lead time scheduling :

    1.Exact to second

    2.ie production start date /time and finish date and time are calculated.

    3. cap reqmts are generated.

    4. uses times from routing.

    5. carried out only if the scheduling mode in MD02 screen is kept with indicator 2.

    From the order finish date the system subtracts the float after production to calculate the production finish date.

    From the production finish date the individual operations in the routing are scheduled backwards to calculate production start date.

    From the production start date the system subtracts the float before production

    to calculate order start date.

    Thanks & Regards,


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  • Posted on Jan 08, 2014 at 05:57 AM

    Hi Gs,

    Can you please try with a high float value and see whether the dates are getting calculated after running of MRP.

    If possible provide the screen shot.

    Regards,

    Krishnendu.

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