How To Fix RSMIGR155 - Could not activate new index definition of table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RSMIGR - Messages during migration

• Message number: 155

• Message text: Could not activate new index definition of table &1

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 RSMIGR155 - Could not activate new index definition of table &1 ?

  The SAP error message RSMIGR155, which states "Could not activate new index definition of table &1," typically occurs during the process of data migration or when changes are made to the database schema, particularly when new indexes are being created or existing ones are being modified.
  Cause:
  
  Database Locking Issues: The table may be locked by another process, preventing the activation of the new index.
  Insufficient Authorizations: The user executing the operation may not have the necessary permissions to modify the index.
  Existing Data Issues: There may be inconsistencies or issues with the existing data that prevent the index from being created or activated.
  Database Constraints: Constraints on the table (like foreign key constraints) may be preventing the index from being activated.
  Technical Issues: There could be underlying technical issues with the database or the SAP system itself.
  
  Solution:
  
  Check Locks: Use transaction code SM12 to check for any locks on the table. If there are locks, you may need to wait for the other processes to complete or manually release the locks if appropriate.
  Review Authorizations: Ensure that the user has the necessary authorizations to create or modify indexes. You may need to consult with your SAP security team.
  Data Consistency Check: Run consistency checks on the table to identify any data issues. You can use transaction codes like SE11 to check the table structure and data.
  Check Constraints: Review any constraints on the table that might be affecting the index creation. You may need to temporarily disable constraints if they are causing issues.
  Database Logs: Check the database logs for any specific error messages that might provide more insight into why the index activation failed.
  Re-run the Migration: If the issue persists, you may need to re-run the migration or index creation process after addressing the above points.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SM12 (Lock Entries), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Database Documentation: Refer to your database documentation for specific commands or procedures related to index management, as the underlying database (e.g., HANA, Oracle, SQL Server) may have its own peculiarities.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.