How To Fix CNV_DMC_SIN158 - Altern.UoM must be different from Base Unit of Measure for Material &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 158

• Message text: Altern.UoM must be different from Base Unit of Measure for Material &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_SIN158 - Altern.UoM must be different from Base Unit of Measure for Material &1 ?

  The SAP error message CNV_DMC_SIN158 indicates that there is an issue with the unit of measure (UoM) configuration for a material in the system. Specifically, the error states that the alternative unit of measure (Alternative UoM) must be different from the base unit of measure for the specified material.
  Cause:
  This error typically occurs during data migration or when setting up materials in the SAP system. The root causes can include:
  
  Configuration Error: The alternative unit of measure has been set to the same value as the base unit of measure in the material master data.
  Data Migration Issues: During data migration, the mapping of units of measure may not have been done correctly, leading to duplicates.
  Incorrect Master Data: The material master data may have been incorrectly maintained, leading to inconsistencies in unit definitions.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Material Master Data:
  
  Go to the material master record for the affected material (transaction code MM03).
  Check the units of measure section to ensure that the alternative unit of measure is different from the base unit of measure.
  
  
  
  Update the Alternative UoM:
  
  If the alternative UoM is the same as the base UoM, change it to a different value that is appropriate for the material.
  Save the changes.
  
  
  
  Review Data Migration Process:
  
  If this error occurred during a data migration process, review the mapping of units of measure in your migration tool or process.
  Ensure that the alternative UoM is correctly defined and does not duplicate the base UoM.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on unit of measure configuration and best practices.
  
  
  
  Testing:
  
  After making the necessary changes, test the material creation or migration process again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Unit of Measure Configuration: Understanding how units of measure are defined and used in SAP is crucial. The base unit of measure is the primary unit in which the material is managed, while alternative units can be used for purchasing, sales, and inventory management.
  Material Master Data: Familiarize yourself with the structure of the material master data, including views related to purchasing, sales, and inventory management.
  SAP Notes and Support: If the issue persists, consider checking SAP Notes for any known issues or patches related to this error message. You can also reach out to SAP support for assistance.
  
  By following these steps, you should be able to resolve the CNV_DMC_SIN158 error and ensure that your material master data is correctly configured.