How To Fix M2418 - No conversion routine from & to & maintained in TMC6U

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 418

• Message text: No conversion routine from & to & maintained in TMC6U

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M2418 - No conversion routine from & to & maintained in TMC6U ?

  The SAP error message M2418 "No conversion routine from & to & maintained in TMC6U" typically occurs in the context of material management or inventory management when there is an issue with unit of measure (UoM) conversions. This error indicates that the system cannot find a defined conversion routine for the specified units of measure in the table TMC6U.
  Cause:
  
  Missing Conversion Routine: The primary cause of this error is that there is no conversion routine defined in the system for the specific units of measure involved in the transaction.
  Incorrect Unit of Measure: The units of measure being used may not be correctly defined or may not exist in the system.
  Configuration Issues: There may be issues with the configuration of the material master or the unit of measure settings in the system.
  
  Solution:
  To resolve the M2418 error, you can follow these steps:
  
  
  Check Unit of Measure Configuration:
  
  Go to transaction code OMN3 (or navigate through the SAP menu: Logistics -> Material Management -> Basic Settings -> Material Master -> Define Units of Measure).
  Verify that the units of measure you are trying to convert are defined correctly.
  
  
  
  Define Conversion Routines:
  
  If the conversion routine is missing, you need to define it. You can do this in transaction code OMN1 (or navigate through the SAP menu: Logistics -> Material Management -> Basic Settings -> Material Master -> Define Conversion Factors).
  Create a new entry for the conversion between the two units of measure.
  
  
  
  Check Material Master Data:
  
  Ensure that the material master data is correctly set up for the material in question. You can check this using transaction code MM03 (Display Material).
  Look under the "Basic Data" and "Purchasing" views to ensure that the units of measure are correctly assigned.
  
  
  
  Test the Changes:
  
  After making the necessary changes, test the transaction again to see if the error persists.
  
  
  
  Consult Documentation: If you are unsure about the correct conversion factors or units of measure, consult the SAP documentation or your organization's SAP support team for guidance.
  
  
  Related Information:
  
  TMC6U Table: This table is used to store conversion routines for units of measure. You can view its contents using transaction code SE11 (Data Dictionary).
  Unit of Measure Types: Familiarize yourself with the different types of units of measure (e.g., base unit, alternative unit) and how they are used in SAP.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on unit of measure conversions.
  
  By following these steps, you should be able to resolve the M2418 error and ensure that the necessary conversion routines are in place for your transactions.