How To Fix CNV_DMC_MC_EXCEPTION147 - Synchronize structure before using function æDetermine Selection FieldÆ

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 147

• Message text: Synchronize structure before using function æDetermine Selection FieldÆ

What causes this issue?

Before you can use the function Determine Selection Field, the source
structure must be synchronized. To do this, navigate to the menu and
choose Migration Object -> Synchronize Structures.

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?

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_MC_EXCEPTION147 - Synchronize structure before using function æDetermine Selection FieldÆ ?

  The SAP error message CNV_DMC_MC_EXCEPTION147 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 there is a mismatch or inconsistency in the data structure that needs to be resolved before proceeding with the function "Determine Selection Field."
  Cause:
  The error is generally caused by one of the following issues:
  
  Outdated Data Structure: The data structure in the source or target system has changed, and the migration tool is not synchronized with the latest structure.
  Missing or Incorrect Mapping: The mapping of fields between the source and target systems may not be correctly defined or may be missing.
  Configuration Issues: There may be configuration issues in the migration cockpit or the specific migration project.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Synchronize the Structure:
  
  Go to the Data Migration Cockpit and look for an option to synchronize the data structure. This may involve refreshing the metadata or re-importing the structure definitions from the source or target system.
  
  
  
  Check Mapping:
  
  Review the field mappings between the source and target systems. Ensure that all necessary fields are correctly mapped and that there are no discrepancies.
  
  
  
  Validate Configuration:
  
  Check the configuration settings of the migration project. Ensure that all required settings are correctly defined and that there are no missing parameters.
  
  
  
  Re-run the Migration:
  
  After synchronizing the structure and validating the mappings, attempt to re-run the migration process to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation or notes related to the Data Migration Cockpit for any specific instructions or updates regarding this error.
  
  
  
  Seek Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific environment and configuration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and guidelines on data migration processes.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the CNV_DMC_MC_EXCEPTION147 error and proceed with your data migration tasks.