How To Fix CNV_PE_UI128 - Select a transformation rule in the transformation rule tree on the right

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_UI -

• Message number: 128

• Message text: Select a transformation rule in the transformation rule tree on the right

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_UI128 - Select a transformation rule in the transformation rule tree on the right ?

  The SAP error message CNV_PE_UI128 typically occurs in the context of data migration or transformation processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the user has not selected a transformation rule from the transformation rule tree, which is necessary for proceeding with the data migration or transformation process.
  Cause:
  
  No Selection Made: The most common cause of this error is that the user has not selected any transformation rule from the available options in the transformation rule tree.
  User Interface Issue: There may be a user interface issue where the transformation rule tree is not properly loaded or displayed.
  Configuration Issues: There could be issues with the configuration of the migration cockpit or the transformation rules themselves.
  
  Solution:
  
  
  Select a Transformation Rule: 
  
  Navigate to the transformation rule tree on the right side of the screen.
  Click on a transformation rule to select it. Ensure that the rule is highlighted or marked as selected.
  
  
  
  Check for UI Issues: 
  
  If the transformation rule tree is not displaying correctly, try refreshing the page or logging out and back into the system.
  Ensure that your browser or SAP GUI is up to date and compatible with the version of SAP you are using.
  
  
  
  Review Configuration: 
  
  If you are still encountering issues, check the configuration of the migration cockpit and the transformation rules. Ensure that the rules are correctly defined and available for selection.
  Consult with your SAP Basis or technical team to verify that all necessary components are properly configured.
  
  
  
  Consult Documentation: 
  
  Refer to the official SAP documentation or help resources for the specific migration tool you are using. This may provide additional insights or troubleshooting steps.
  
  
  
  Seek Support: 
  
  If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide additional context on how to properly select transformation rules.
  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_PE_UI128 error and proceed with your data transformation or migration tasks.