How To Fix CMM_MTMCDS821 - Invalid conversion factor (mrkt to doc. UoM)

SAP Error Message - Details

• Message type: E = Error

• Message class: CMM_MTMCDS - Messages in CDS Views for Mark-to-Market Reporting

• Message number: 821

• Message text: Invalid conversion factor (mrkt to doc. UoM)

What causes this issue?

No conversion factor could be found for the conversion from the market
unit of measure to the document unit of measure.

System Response

The price cannot be evaluated.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMM_MTMCDS821 - Invalid conversion factor (mrkt to doc. UoM) ?

  The SAP error message CMM_MTMCDS821 indicates that there is an issue with the conversion factor between market units of measure (UoM) and document units of measure in the context of materials management or inventory management. This error typically arises when the system is unable to convert quantities from one unit of measure to another due to an invalid or missing conversion factor.
  Cause:
  
  Missing Conversion Factor: The conversion factor between the market UoM and the document UoM is not defined in the system.
  Incorrect Configuration: The configuration for the units of measure in the material master may be incorrect or incomplete.
  Data Inconsistency: There may be inconsistencies in the data related to units of measure, such as incorrect entries in the material master or related tables.
  Unit of Measure Settings: The settings for the unit of measure in the relevant transaction or document may not align with the definitions in the material master.
  
  Solution:
  
  
  Check Material Master:
  
  Go to the material master record (transaction code MM03).
  Check the "Units of Measure" tab to ensure that the conversion factors are correctly defined for the relevant UoMs.
  If the conversion factor is missing, you can add it using transaction code MM02.
  
  
  
  Define Conversion Factors:
  
  If you need to define or update conversion factors, you can do this in the material master under the "Units of Measure" section.
  Ensure that the market UoM and document UoM are correctly set up with valid conversion factors.
  
  
  
  Review UoM Settings:
  
  Check the configuration settings for units of measure in the SAP system (transaction code OMW1).
  Ensure that the UoM types and conversion factors are correctly defined.
  
  
  
  Data Consistency Check:
  
  Run a consistency check on the material master data to identify any discrepancies or issues.
  Use transaction codes like MM17 for mass changes or SE16N to view relevant tables.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to unit of measure handling and conversion factors for additional guidance.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting SAP Notes for specific patches or updates related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: MM03, MM02, OMW1, MM17, SE16N
  Tables: 
  
  MARA (General Material Data)
  MARM (Units of Measure for Material)
  T006 (Units of Measure)
  
  
  SAP Notes: Search for relevant SAP Notes that may address specific issues related to unit of measure conversions.
  
  By following these steps, you should be able to identify and resolve the cause of the CMM_MTMCDS821 error in your SAP system.