How To Fix CNV750 - Index & (to be dropped) for table & does not exist in the database

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 750

• Message text: Index & (to be dropped) for table & does not exist in the database

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV750 - Index & (to be dropped) for table & does not exist in the database ?

  The SAP error message "CNV750 Index & (to be dropped) for table & does not exist in the database" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is trying to drop an index that it believes should exist for a specific database table, but it cannot find that index in the database.
  Cause:
  
  Index Not Created: The index that the system is trying to drop may not have been created in the first place. This can happen if the migration process was interrupted or if there was a misconfiguration.
  Database Changes: Changes in the database schema or structure, such as manual deletions or modifications, can lead to discrepancies between what the migration tool expects and the actual database state.
  Inconsistent State: The database might be in an inconsistent state due to previous migration attempts or errors, leading to missing indexes.
  Version Mismatch: The error may also arise if there is a version mismatch between the migration tool and the database schema.
  
  Solution:
  
  
  Check Index Existence: Verify if the index actually exists in the database. You can do this by querying the database directly or using transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) in SAP.
  SELECT * FROM user_indexes WHERE index_name = 'YOUR_INDEX_NAME';
  
  
  Recreate the Index: If the index is missing, you may need to recreate it manually or ensure that the migration process is set up to create it correctly.
  
  
  Review Migration Logs: Check the logs of the migration process for any errors or warnings that might indicate why the index was not created or was dropped unexpectedly.
  
  
  Database Consistency Check: Run consistency checks on the database to ensure that all objects are in the expected state. This can help identify any other potential issues.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be specific steps or prerequisites that need to be followed.
  
  
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance. They may have additional insights or patches available for your specific situation.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE14 (Database Utility), and ST22 (Dump Analysis) for troubleshooting.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, ensure that you are following the recommended procedures and prerequisites outlined in the official SAP documentation.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on similar issues.
  
  By following these steps, you should be able to diagnose and resolve the error related to the missing index during your SAP migration process.