How To Fix CNV_DMC_MC_EXCEPTION103 - Parameter name &1 already exists; choose another parameter name

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 103

• Message text: Parameter name &1 already exists; choose another parameter name

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_EXCEPTION103 - Parameter name &1 already exists; choose another parameter name ?

  The SAP error message CNV_DMC_MC_EXCEPTION103 indicates that there is a conflict with a parameter name in the context of a data migration or conversion process. This error typically arises when you are trying to define a new parameter that has the same name as an existing one, which is not allowed.
  Cause:
  
  Duplicate Parameter Name: The primary cause of this error is that the parameter name you are trying to use already exists in the system or in the context of the migration project.
  Configuration Issues: There may be issues in the configuration of the migration project where parameters are not being managed correctly.
  Data Model Conflicts: If you are working with multiple data models or migration objects, there may be overlapping parameter names.
  
  Solution:
  
  Choose a Unique Parameter Name: The simplest solution is to select a different name for the parameter that does not conflict with existing ones. Ensure that the new name is unique within the context of your migration project.
  Review Existing Parameters: Check the list of existing parameters in your migration project to identify the one that is causing the conflict. You can usually find this in the configuration settings or the migration object settings.
  Modify the Migration Object: If you have control over the migration object, consider modifying it to avoid the conflict. This may involve renaming or removing the existing parameter if it is not needed.
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific migration tool or process you are using. There may be guidelines on naming conventions or parameter management.
  Check for Updates: Ensure that your SAP system is up to date, as there may be patches or updates that address known issues with parameter management in migration projects.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the CNV_DMC_MC_EXCEPTION103 error. SAP Notes often provide specific solutions or workarounds.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues. You can find discussions, solutions, and best practices shared by other SAP professionals.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, familiarize yourself with its features and limitations regarding parameter management.
  
  By following these steps, you should be able to resolve the CNV_DMC_MC_EXCEPTION103 error and proceed with your data migration or conversion process.