How To Fix CNV753 - Index & for table & could not be dropped

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 753

• Message text: Index & for table & could not be dropped

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV753 - Index & for table & could not be dropped ?

  The SAP error message "CNV753 Index & for table & could not be dropped" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system is unable to drop a specific index associated with a database table, which can hinder the migration process.
  Causes:
  
  Active Database Constraints: The index may be associated with constraints (like primary keys or foreign keys) that prevent it from being dropped.
  Open Transactions: There may be open transactions or locks on the table that are preventing the index from being dropped.
  Insufficient Authorizations: The user executing the operation may not have the necessary authorizations to drop the index.
  Index in Use: The index might be actively used by other processes or queries, making it impossible to drop.
  Database Corruption: In rare cases, database corruption or inconsistencies can lead to issues with dropping indexes.
  
  Solutions:
  
  Check Constraints: Review the constraints associated with the table and ensure that they are not preventing the index from being dropped. You may need to drop or disable constraints before dropping the index.
  Release Locks: Ensure that there are no open transactions or locks on the table. You can use database tools or transaction codes (like SM12) to check for locks and release them if necessary.
  Check Authorizations: Verify that the user has the necessary authorizations to perform the operation. You may need to consult with your SAP security team.
  Drop Index Manually: If the migration tool fails to drop the index, you can try to drop it manually using SQL commands or through the SAP GUI, provided you have the necessary permissions.
  Database Consistency Check: If you suspect database corruption, perform a consistency check on the database and resolve any issues found.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like SE11 (Data Dictionary) to view the table and its indexes, and SE14 (Database Utility) to manage database objects.
  SAP Notes: Search for specific SAP Notes related to the CNV753 error message for additional troubleshooting steps or patches.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for best practices and troubleshooting tips.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.