How To Fix M2420 - No USING parameters maintained for unit conversion routine in TMC23

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 420

• Message text: No USING parameters maintained for unit conversion routine in TMC23

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M2420 - No USING parameters maintained for unit conversion routine in TMC23 ?

  The SAP error message M2420, which states "No USING parameters maintained for unit conversion routine in TMC23," typically occurs in the context of material management and unit of measure conversions in SAP. This error indicates that the system is unable to find the necessary parameters for converting units of measure for a specific material or transaction.
  Cause:
  
  Missing Unit Conversion Routine: The error usually arises when the unit conversion routine (TMC23) does not have the required parameters defined for the specific unit of measure you are trying to use.
  Incorrect Configuration: There may be an issue with the configuration of the unit of measure settings in the material master or the conversion factors between different units of measure.
  Data Inconsistency: There could be inconsistencies in the data related to the material or its units of measure.
  
  Solution:
  To resolve the M2420 error, you can follow these steps:
  
  
  Check Unit of Measure Configuration:
  
  Go to the transaction code OMN3 to check the unit of measure settings.
  Ensure that the unit conversion routine is correctly defined and that the necessary parameters are maintained.
  
  
  
  Maintain Conversion Factors:
  
  Use transaction code CUNI to maintain unit of measure conversions.
  Ensure that the conversion factors between the units of measure are correctly defined.
  
  
  
  Review Material Master Data:
  
  Check the material master data using transaction code MM03.
  Verify that the units of measure are correctly assigned and that the conversion factors are present.
  
  
  
  Check for Customization:
  
  If there are any custom developments or enhancements related to unit conversions, review them to ensure they are functioning correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on unit conversion routines and their configuration.
  
  
  
  Testing:
  
  After making the necessary changes, perform tests to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  OMN3: Maintain Unit of Measure Conversion
  CUNI: Maintain Units of Measure
  MM03: Display Material Master
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide deeper insights into the configuration and potential issues within your specific SAP environment.