How to define uom conversion on each PO?

[Former Member]

Hello Gurus,

I have a question on how to define the conversion of UOM on each PO.

I set the order unit BDT and the SKU M3, variable OUn on purchasing view material master = 1.

I need to set on the PO for today 10 BDT = 12 M3 but another PO for tomorrow 10 BDT =13 M3

This is depend to the drymeter even for the same vendor.

Is the only way by changing the Purchasing Info Record?

I did it and it works but I don't want to change the PIR everytime create a PO, cause a lot of PO should be maintained.

Please advise if another possibilities solution.

I check some thread but nothing match with the requirement.

Thanks before.

Wiliam Rusdianto

[Former Member]

Many thanks All, I will read and discuss with the business owner.

Will comeback soon.

[JL23]

Have a look into , which is the usual method to handle materials with different number of units. Rupesh described the whole process very well in his document, including the PO part.

The other option might be variant configuration. see the docu for  Configurable Materials in Purchasing

[Former Member]

Thanks alot for the information.

I have read it and little bit confuse in the end, if the IS-CWM and Batch-Specific Units of Measure are one package or not.

If no, how to implement IS-CWM? Should it follow the Batch-Specific Units of Measure or have a different settings?

Currently we are not using a spesific batch, because we mix the materials into one place.

BR,

Wiliam

[JL23]

There is an OSS note explaining the steps:

Add info about installing/activating IS-CWM on ECC 6.0

SAP Note Number: 884081

[former_member183155]

Hi all ;

Catch weight management has some requirements and restriction for all modules. Before implement this activation belowed oss notes must be read.

863498 - functional restricions in SAP Catch Weight Management

Regards.

M.Ozgur Unal

[former_member183424]

Where do you want to store the conversion ? How can SAP know what will be the next conversion ?

Obviously you need to store these all conversions in somewhere in SAP system.

In purchase order, system will fetch the conversion from three different places with different method.

If you are using batch number in purchase order line item, then system will take the conversion from batch classification. If you are using purchase info record, then system will take the conversion from purchase info record. If there are no purchase info record/batch number, then system will take the conversion from material master record. By any method, you have to change the conversion when it got changed in your business case.

If you are ready with your own custom development, then you can store this information in a Z table, system will take the conversion from this Z table during PO creation according to your logic.

[Former Member]

Oh I though it can be stored on the PO only because when I change the conversion on the PIR, the previous PO still using the old conversion.

If I want to store into Z table, do I need to use any user exit on ME21N or develop Z program to create a PO?

[JL23]

Changing the info record back and forth is certainly not SAPs design for that. And of course the existing PO is unaffected by such changes, since those conversions are copied over to the PO. But if they would be changeable in the PO  then you could have a big mess in your system as it goes out of control. I actually believe you have already created such a mess in inventory management with this changing of master data.  What does your stock overview give you after you have received the order quantity from both POs? Is this really satisfying your needs?