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LTP does not match operative MRP

Logistics : PP

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LTP does not match operative MRP

Postby whatmeworry » Tue Apr 24, 2007 5:14 pm

Hi all.
We want to execute "MRP" using different forecasts in PIR and then compare the results. One way is to use Long Term Planning for one of the demands and then use the comparison tools already available.

The problem is that LTP is not recognizing the subcontract requirements created by subcontract PO's.

For example, I have a subcontract PO for 1000 of material A and it generates a requirement for 1100 of material B. I then create a PO for 1100 material B for delivery to subcontract stock, which fulfills the requirement.
In operative MRP both the requirement and the fulfilling PO are seen in the vendor segment in MD05.
However, if I run the same scenario in Long Term Planning and view it with MS05 I see the fulfilling PO... but the requirement is gone. The component of the subcontract PO is not seen.

Any idea's?
I want LTP and MRP to operate identically so I can compare different forecasts.

Thanks
whatmeworry
 
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Postby whatmeworry » Thu Apr 26, 2007 4:30 pm

Anyone know how to fix this?
whatmeworry
 
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Postby j2 » Thu Apr 26, 2007 4:41 pm

Try different scenarios
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Re: LTP does not match operative MRP

Postby coleale » Wed Oct 24, 2012 5:08 am

Hi, how have you solved?
i have similar problem
coleale
 
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Re: LTP does not match operative MRP

Postby whatmeworry » Wed Oct 24, 2012 5:07 pm

We implemented a Business Add-In (BAdI)

Here is the help from SAP for general BAdI info:
http://help.sap.com/saphelp_nw04/helpda ... ameset.htm

We implemented BAdI MD_CHANGE_MRP_DATA with Methods CONSIDER_RESB and CHANGE_MDPSX_MARD.

With method CONSIDER_RESB we include in LTP the SubCon requirements. To do this an X flag must be set for LTP_SUBCON in parameter CH_NO_EXIT_FLAGS when IM_PLAUF = L

With method CHANGE_MDPSX_MARD we exclude stock from Long Term Planning when MARD-DISKZ = 2 and when IM_PLAUF = L by setting MNG01 to 0 in structure CH_MDPS.

You can explore MD_CHANGE_MRP_DATA using transaction SE18.

Good luck.
whatmeworry
 
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