How To Fix CNV_DMC_MC_EXCEPTION101 - Domain &1 already added

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

• Message number: 101

• Message text: Domain &1 already added

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION101 - Domain &1 already added ?

  The SAP error message CNV_DMC_MC_EXCEPTION101: Domain &1 already added typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that there is an attempt to add a domain (a set of values or a range of values for a field) that has already been included in the migration process.
  Cause:
  
  Duplicate Domain Definition: The domain you are trying to add has already been defined in the migration project. This can happen if the same domain is referenced multiple times in the migration configuration.
  Configuration Error: There may be a misconfiguration in the migration settings or mapping that leads to the same domain being processed more than once.
  Data Model Issues: The underlying data model may have inconsistencies or redundancies that cause the same domain to be recognized multiple times.
  
  Solution:
  
  Check Domain Definitions: Review the migration project configuration to ensure that the domain is not being added multiple times. Look for any duplicate entries in the mapping or configuration files.
  Remove Duplicates: If you find that the domain is indeed listed more than once, remove the duplicate entry from the configuration.
  Review Migration Steps: Go through the steps of your migration process to ensure that domains are being handled correctly and that there are no unnecessary repetitions.
  Consult Documentation: Refer to the SAP documentation for the Data Migration Cockpit or the specific migration tool you are using to understand how domains should be defined and managed.
  Testing: After making changes, run a test migration to ensure that the error does not occur again.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common problems.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues. You can find discussions and solutions that may be relevant to your situation.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and guidelines on managing domains and data mappings.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.