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

CNV_PE_UI128 - Overview

• 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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CNV_PE_UI128 - Details

• 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