How To Fix CNV642 - Index-building tasks (if there were any) were de-selected

CNV642 - Overview

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 642

• Message text: Index-building tasks (if there were any) were de-selected

Self-Explanatory Message

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CNV642 - Details

• The SAP error message "CNV642 Index-building tasks (if there were any) were de-selected" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This message indicates that certain index-building tasks that were supposed to be executed as part of the migration process have been de-selected or skipped.
  
  Cause:
  
  
  Configuration Issues: The migration settings may not have been configured correctly, leading to the de-selection of index-building tasks.
  Performance Considerations: In some cases, index-building tasks may be de-selected to improve performance during the migration process, especially if the data volume is large.
  User Intervention: Users may have manually de-selected these tasks during the migration setup.
  Technical Constraints: There may be technical constraints or limitations in the system that prevent the execution of index-building tasks.
  
  
  Solution:
  
  Review Migration Settings: Check the migration settings in the SAP Migration Cockpit or the relevant tool you are using. Ensure that index-building tasks are selected