How To Fix CNV_DMC_MC_EXCEPTION122 - Parameters do not belong to the current rule; the rule will be updated

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 122

• Message text: Parameters do not belong to the current rule; the rule will be updated

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION122 - Parameters do not belong to the current rule; the rule will be updated ?

  The SAP error message CNV_DMC_MC_EXCEPTION122 typically occurs in the context of data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that the parameters being processed do not match the expected parameters defined in the current migration rule, which leads to an automatic update of the rule to accommodate the new parameters.
  Cause:
  
  
  Mismatch of Parameters: The parameters being passed to the migration rule do not align with the parameters that the rule was originally designed to handle. This can happen if:
  
  The source data structure has changed.
  The migration rule was modified after the initial setup.
  There are inconsistencies in the data being migrated.
  
  
  
  Rule Configuration: The migration rules may not have been properly configured to handle the specific data being processed, leading to the system attempting to update the rule dynamically.
  
  
  Solution:
  
  
  Review Migration Rules: Check the migration rules in the Data Migration Cockpit to ensure they are correctly configured to handle the parameters being passed. Make sure that the rules are aligned with the current data structure.
  
  
  Update Parameters: If the parameters have changed, update the migration rules to include the new parameters. This may involve modifying the existing rules or creating new ones that accurately reflect the current data requirements.
  
  
  Data Consistency Check: Ensure that the source data is consistent and adheres to the expected format. Validate the data to identify any discrepancies that may be causing the mismatch.
  
  
  Log Analysis: Review the logs generated during the migration process for additional context on the error. This can provide insights into which specific parameters are causing the issue.
  
  
  Testing: After making changes to the rules or data, conduct thorough testing to ensure that the migration process works as expected without triggering the error.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the Data Migration Cockpit for any specific guidelines or updates that may address this error.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Version Compatibility: Ensure that you are using compatible versions of the SAP system and the Data Migration Cockpit, as discrepancies can lead to unexpected errors.
  
  By following these steps, you should be able to address the CNV_DMC_MC_EXCEPTION122 error effectively. If the issue persists, consider reaching out to SAP support for further assistance.