How To Fix CNV_DMC_MC_EXCEPTION112 - Data element &1 is already assigned to rule &2 (visibility &3)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 112

• Message text: Data element &1 is already assigned to rule &2 (visibility &3)

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION112 - Data element &1 is already assigned to rule &2 (visibility &3) ?

  The SAP error message CNV_DMC_MC_EXCEPTION112 indicates that there is a conflict in the data migration process where a data element is already assigned to a specific rule, and the system is trying to assign it again. This typically occurs in the context of data migration projects, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools.
  Cause:
  
  Duplicate Assignment: The data element (e.g., a field or attribute) is already linked to a migration rule, and the system does not allow it to be assigned to another rule or the same rule again.
  Configuration Error: There may be a misconfiguration in the migration settings or rules that leads to this conflict.
  Data Model Issues: The underlying data model may have inconsistencies or overlaps that cause the same data element to be referenced multiple times.
  
  Solution:
  
  Review Migration Rules: Check the migration rules in the DMC to see where the data element is already assigned. Ensure that you are not trying to assign it to multiple rules unnecessarily.
  Modify Rules: If the data element needs to be used in multiple contexts, consider modifying the existing rules or creating new ones that do not conflict with the current assignments.
  Check for Duplicates: Look for any duplicate entries in your migration configuration that might be causing the conflict.
  Consult Documentation: Refer to the SAP documentation for the Data Migration Cockpit to understand the proper configuration and limitations regarding data element assignments.
  Error Logs: Check the error logs for more detailed information about the context in which the error occurred. This can provide insights into what specific actions led to the conflict.
  
  Related Information:
  
  SAP Data Migration Cockpit (DMC): A tool used for migrating data into SAP systems, which allows for the mapping and transformation of data from legacy systems to SAP.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration, including proper planning, testing, and validation of migration rules.
  SAP Notes and Community: Search for relevant SAP Notes or community discussions that may address similar issues or provide additional troubleshooting steps.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with a professional who specializes in SAP data migration for further assistance.