How To Fix TG520 - *** SUBST_DELETE_OLD_INDEXES

SAP Error Message - Details

• Message type: E = Error

• Message class: TG - Messages for Upgrade Repository Switch

• Message number: 520

• Message text: *** SUBST_DELETE_OLD_INDEXES

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message TG520 - *** SUBST_DELETE_OLD_INDEXES ?

  The SAP error message TG520 with the description "SUBST_DELETE_OLD_INDEXES" typically relates to issues encountered during the process of deleting old indexes in the SAP system. This error can occur in various contexts, such as during database maintenance or when performing certain operations that involve index management.
  Cause:
  The error can be caused by several factors, including:
  
  Database Locking Issues: If the database is locked or if there are ongoing transactions that prevent the deletion of old indexes, this error may occur.
  Insufficient Authorizations: The user executing the operation may not have the necessary authorizations to delete indexes.
  Corrupted Indexes: If the indexes are corrupted or if there are inconsistencies in the database, the system may fail to delete them.
  System Configuration Issues: Incorrect configuration settings in the SAP system or the database can lead to this error.
  Database Constraints: Certain constraints or dependencies may prevent the deletion of specific indexes.
  
  Solution:
  To resolve the TG520 error, you can try the following steps:
  
  
  Check Database Locks: Use transaction codes like SM12 to check for any locks on the database that might be preventing the deletion of indexes. If locks are found, resolve them appropriately.
  
  
  Review Authorizations: Ensure that the user executing the operation has the necessary authorizations to delete indexes. You may need to consult with your SAP security team.
  
  
  Check for Corrupted Indexes: Use database tools or SAP transactions (like DB02) to check for any corrupted indexes. If corruption is found, you may need to rebuild the indexes.
  
  
  Run Database Maintenance: Perform regular database maintenance tasks, such as reorganization or optimization, to ensure that the database is in good health.
  
  
  Review System Configuration: Check the configuration settings in both the SAP system and the database to ensure they are set up correctly for index management.
  
  
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that can resolve the issue.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs or screenshots.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to check locks), DB02 (to monitor database performance), and SE11 (to manage database objects).
  SAP Notes: Regularly check for updates and notes related to database management and index handling in the SAP Support Portal.
  Documentation: Review SAP documentation related to database administration and index management for best practices and troubleshooting tips.
  
  By following these steps, you should be able to diagnose and resolve the TG520 error in your SAP system.