How To Fix CPE239 - Conversion rule &1 does not support UoM conversion

SAP Error Message - Details

• Message type: E = Error

• Message class: CPE - Commodity Pricing Engine

• Message number: 239

• Message text: Conversion rule &1 does not support UoM conversion

What causes this issue?

Conversion Rule &V1& was chosen for Conversion Place &V2&. This
Conversion place is used to convert units of measurements (UoMs).
Conversion Rule &V1&, however, does not have a Quantity Conversion Rule
and therefore cannot convert UoMs.

System Response

Conversion Rule &V1& cannot be used for Conversion Place &V2&.

How to fix this error?

Choose a Conversion Rule from the F4 help.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CPE239 - Conversion rule &1 does not support UoM conversion ?

  The SAP error message CPE239, which states "Conversion rule &1 does not support UoM conversion," typically occurs in the context of unit of measure (UoM) conversions in SAP, particularly when dealing with material master data, sales orders, or inventory management.
  Cause:
  
  
  Invalid Conversion Rule: The conversion rule specified in the system does not support the conversion between the units of measure being used. This can happen if the conversion rule is not defined correctly or if it is missing entirely for the specific UoM pair.
  
  
  Missing UoM in Master Data: The unit of measure you are trying to convert may not be defined in the material master or may not have a corresponding conversion factor.
  
  
  Incorrect Configuration: The configuration settings for UoM conversions in the system may not be set up properly, leading to the inability to perform the conversion.
  
  
  Solution:
  
  
  Check Conversion Rules: 
  
  Go to the transaction code CUNI (Unit of Measure Conversion) to check the conversion rules defined in the system.
  Ensure that the conversion rule for the specific UoM pair is defined and active.
  
  
  
  Define Missing UoM:
  
  If the UoM is not defined, you can create a new UoM conversion in the same transaction (CUNI).
  Ensure that the conversion factors are correctly set up.
  
  
  
  Review Material Master Data:
  
  Check the material master data (transaction code MM03) for the material in question to ensure that the UoMs are correctly defined and that the conversion rules are linked.
  
  
  
  Configuration Settings:
  
  Review the configuration settings in the SAP system related to UoM conversions. This can be done through the SPRO transaction (SAP Reference IMG) under Logistics > General > Master Data > Units of Measure.
  
  
  
  Testing:
  
  After making the necessary changes, test the conversion again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Documentation: Refer to SAP Help documentation for detailed information on unit of measure conversions and how to set them up.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to UoM conversions and the CPE239 error.
  User Forums: Engage with SAP community forums or user groups for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the CPE239 error and implement a solution to resolve it.