How To Fix RSD_TREX540 - BWA index for InfoCube '&2': Fact index is '&1' larger than fact tables

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 540

• Message text: BWA index for InfoCube '&2': Fact index is '&1' larger than fact tables

What causes this issue?

<ZH>Note that the database statistics</> for calculating the size of the
fact table <ZH>must be up to date</>, since the system does not recount;
it uses the database statistics from the tables.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX540 - BWA index for InfoCube '&2': Fact index is '&1' larger than fact tables ?

  The SAP error message RSD_TREX540 indicates an issue with the BWA (Business Warehouse Accelerator) index for a specific InfoCube. The message states that the size of the fact index is larger than the actual fact tables, which can lead to inconsistencies and performance issues when querying data.
  Cause:
  This error typically arises due to one of the following reasons:
  
  
  Data Inconsistency: There may be inconsistencies between the data in the fact tables and the data that has been indexed in the BWA. This can happen if data was deleted or modified in the InfoCube without properly updating the BWA index.
  
  
  Index Corruption: The BWA index may have become corrupted or not properly synchronized with the underlying data in the InfoCube.
  
  
  Improper Indexing: The indexing process may not have completed successfully, leading to an index that does not accurately reflect the data in the fact tables.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Rebuild the BWA Index:
  
  Go to the SAP BW system and navigate to the BWA administration.
  Find the option to rebuild or reinitialize the index for the affected InfoCube.
  This process will recreate the index based on the current data in the fact tables.
  
  
  
  Check Data Consistency:
  
  Use transaction codes like RSA1 to check the data in the InfoCube and ensure that it is consistent.
  You can also run consistency checks to identify any discrepancies between the data in the InfoCube and the BWA index.
  
  
  
  Delete and Recreate the Index:
  
  If rebuilding the index does not resolve the issue, you may need to delete the existing index and create a new one from scratch.
  Ensure that you have a backup of your data before performing this operation.
  
  
  
  Monitor and Optimize:
  
  After resolving the issue, monitor the performance of the BWA and the InfoCube to ensure that the problem does not recur.
  Regularly check for data consistency and perform maintenance tasks as needed.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSD1 (InfoObject Maintenance), and RSD3 (DataSource Maintenance) for managing InfoCubes and BWA.
  SAP Notes: Check SAP Notes related to BWA and InfoCubes for any known issues or patches that may address similar problems.
  Documentation: Refer to SAP documentation for best practices on managing BWA indexes and ensuring data consistency in BW.
  
  By following these steps, you should be able to resolve the RSD_TREX540 error and ensure that your BWA index is properly aligned with the data in your InfoCube.