How To Fix RSMIGR156 - Indexes of table &1 modified

SAP Error Message - Details

• Message type: E = Error

• Message class: RSMIGR - Messages during migration

• Message number: 156

• Message text: Indexes of table &1 modified

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 RSMIGR156 - Indexes of table &1 modified ?

  The SAP error message RSMIGR156 indicates that the indexes of a specified table (denoted as &1) have been modified during a data migration process. This typically occurs when you are using the SAP Migration Cockpit or similar tools to migrate data from one system to another, and the system detects that the indexes of the target table have been altered after the migration process has started.
  Cause:
  
  Concurrent Modifications: The most common cause of this error is that there are concurrent modifications happening on the target table while the migration is in progress. This can happen if other processes or users are inserting, updating, or deleting records in the table.
  Manual Changes: Manual changes to the database schema or indexes during the migration process can also trigger this error.
  Data Consistency Issues: If the migration process is not properly synchronized with the database state, it can lead to inconsistencies that result in this error.
  
  Solution:
  
  Pause Other Activities: Ensure that no other processes are modifying the target table during the migration. This may involve pausing other transactions or locking the table temporarily.
  Check for Manual Changes: Review any manual changes made to the database schema or indexes during the migration process. If changes were made, revert them or ensure they are compatible with the migration.
  Restart the Migration: If the error persists, you may need to restart the migration process. Before doing so, ensure that the target table is in a stable state and that no other modifications will occur during the migration.
  Use Transaction Management: Implement transaction management to ensure that the migration process can handle concurrent modifications more gracefully, if applicable.
  Consult SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional guidance or patches related to this error.
  
  Related Information:
  
  SAP Migration Cockpit: This tool is commonly used for data migration in SAP systems. Familiarize yourself with its functionalities and best practices to avoid such issues.
  Database Locking Mechanisms: Understanding how to use database locking mechanisms can help prevent concurrent modifications during critical operations like data migration.
  Performance Monitoring: Monitor the performance of the database and the migration process to identify any bottlenecks or issues that may lead to this error.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance, providing them with detailed logs and context regarding the migration process.