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Purchase Requestion is getting created with change in lot size in MRP

Dear Experts,

When we run MRP with Lot Size MB

Planned Order is created.

Planned Delivery Time is 100. Opening Period is 10. Requirement of finished material is for 1,2nd and 3rd week of november So according to me system should do forward scheduling. But in below pic i am not getting this.

Where as if i run the same material with lot size WB PR is getting created

Kindly tell me why this is showing


Saurabh Kumar

Pic2.png (30.3 kB)
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2 Answers

  • Oct 27, 2015 at 06:52 PM


    Are you sure that this stock transfer requisition was created by MRP? You can check the creation indicator on table EBAN.

    If so, check if you have any active implementation of BAdI MD_STOCK_TRANSFER, that may influence this calculation.



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    • Hello,

      I can see the exception message 30 maintain the rescheduling  horizon in OMDW for MRP group or plant,  to make the new rescheduling horizon longer to cover the existing orders, and run MRP again.

      Please check "creation indicator" settings for the MRP Group linked to the material on OPPR for planned or PR creation.

      For materials with an MRP group, the values from the MRP group has the highest priority.

      A total planning run with the indicator "Create purchase req." set to "Purchase requisition in opening period" (BANER = 2) generates a purchase requisition (PReq) for planning on a working day. However, for planning on a non-working day, it generates a planned order.

      Refer consulting note 23922 - MRP: Creation indicators, PReq. or planned order

      Best Regards,


  • Nov 05, 2015 at 08:57 PM


    Let me try to understand the issue

    When you run the MRP using lot size MB the system generates planned orders and when the lot size is WB the system generates purchase requisitions.. is that the problem?

    Are you using the same parameters in your MRP execution?

    If yes, check using a different opening period.. 6 or 7. Note that by suing 10 days in opening period, all the requirements are inside the horizon, since you requirements are for the dates:




    Kind Regards,


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