How To Fix CNV_DMC_SIN519 - Alternative Unit of Measure: &1 already exists

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 519

• Message text: Alternative Unit of Measure: &1 already exists

What causes this issue?

With object 'Product - extend existing record by new org levels' you can
only extend new alternative unit of measures. You can't change already
existing entries.

System Response

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

How to fix this error?

Delete these records from the template/staging table.

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 CNV_DMC_SIN519 - Alternative Unit of Measure: &1 already exists ?

  The SAP error message CNV_DMC_SIN519 indicates that there is an issue with the alternative unit of measure (UoM) for a material or product in the system. Specifically, the error states that the alternative unit of measure you are trying to create or assign already exists in the system.
  Cause:
  
  Duplicate Entry: The primary cause of this error is that the alternative unit of measure you are trying to add is already defined for the material or product in question.
  Data Migration Issues: This error can also occur during data migration processes, where the same alternative unit of measure is being imported multiple times.
  Configuration Errors: There may be configuration issues in the material master data setup that lead to conflicts in unit of measure definitions.
  
  Solution:
  
  
  Check Existing UoM: 
  
  Go to the material master data (transaction code MM03) and check the alternative units of measure for the specific material. Ensure that the UoM you are trying to add does not already exist.
  
  
  
  Remove Duplicate Entry:
  
  If you find that the alternative UoM already exists and is not needed, you can remove or modify it as necessary.
  
  
  
  Data Migration Review:
  
  If this error occurs during a data migration process, review the data being imported to ensure that there are no duplicate entries for alternative units of measure.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific error message for any additional guidance or updates that may be relevant.
  
  
  
  Use Transaction Codes:
  
  Use transaction codes like MM02 (Change Material) to modify the material master data and resolve the conflict.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Material Master Data: Understanding how material master data is structured in SAP can help in troubleshooting issues related to units of measure.
  Unit of Measure Configuration: Familiarize yourself with the configuration settings for units of measure in SAP, which can be found in the customizing settings (transaction code SPRO).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  
  By following these steps, you should be able to resolve the CNV_DMC_SIN519 error and ensure that your alternative units of measure are correctly configured in the SAP system.