How To Fix DT551 - The index & was deleted in the database

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 551

• Message text: The index & was deleted in the database

What causes this issue?

The specified index was deleted from the database.

System Response

Information message

How to fix this error?

No action required.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT551 - The index & was deleted in the database ?

  The SAP error message DT551 indicates that a specific index in the database has been deleted. This can occur for various reasons, such as database maintenance activities, changes in the data model, or issues during data updates.
  Cause:
  
  Database Maintenance: Indexes may be deleted as part of routine database maintenance or optimization processes.
  Data Model Changes: Changes in the underlying data model (e.g., table structure changes) can lead to the deletion of indexes.
  Corruption or Errors: There may be corruption in the database or errors during data updates that result in the index being deleted.
  Manual Deletion: An administrator may have manually deleted the index for some reason.
  
  Solution:
  
  Recreate the Index: If the index is essential for performance or functionality, you can recreate it. This can typically be done using transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility).
  Check Database Logs: Review the database logs to understand why the index was deleted. This can provide insights into whether it was a manual action or an automated process.
  Restore from Backup: If the index is critical and cannot be recreated easily, consider restoring it from a backup if available.
  Consult Documentation: Check SAP documentation or notes related to the specific index and its importance to the application.
  Contact SAP Support: If the issue persists or if you are unsure about the implications of the missing index, it may be beneficial to contact SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE14 (Database Utility), and ST22 (Dump Analysis) for troubleshooting.
  Database Administration: Understanding the role of indexes in database performance and how they are managed can help prevent similar issues in the future.
  SAP Notes: Search for SAP Notes related to the specific index or error message for additional guidance and best practices.
  
  Preventive Measures:
  
  Regularly monitor database performance and index usage.
  Implement a change management process for database schema changes.
  Schedule regular database maintenance to ensure indexes are optimized and not inadvertently deleted.
  
  By following these steps, you should be able to address the DT551 error and prevent it from occurring in the future.