How To Fix RSD_TREX159 - Cube &1 has BWA as primary storage. Reading from BWA not possible.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 159

• Message text: Cube &1 has BWA as primary storage. Reading from BWA not possible.

What causes this issue?

You are trying to read data from an InfoCube with primary data storage
on the BWA (BWA-only InfoCube). Reading data from the BWA is not
possible.
Possible causes are:
Data should be read from the InfoCube in question without DB
aggregation. Data can only be read from the BWA with DB aggregation.
The BWA index is currently not available. It is either inactive or
corrupt.

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

System Response

The read process is terminated.

How to fix this error?

Check whether the data is read using DB aggregation.
Check whether the BWA index is not available for technical reasons. Fix
the cause.
Check whether the BWA index is corrupt.

Procedure for System Administrators

If the BWA index is corrupt, you need to delete the data from the
InfoCube and create the BWA index again. You can do this in the In
foCube#s context menu in Data Warehousing Workbench (transaction RSA1).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX159 - Cube &1 has BWA as primary storage. Reading from BWA not possible. ?

  The SAP error message RSD_TREX159 indicates that there is an issue with reading data from the BWA (Business Warehouse Accelerator) for a specific InfoCube. This error typically arises when the system is unable to access the BWA for the specified cube, which can be due to several reasons. Below are the potential causes, solutions, and related information for this error:
  Causes:
  
  BWA Not Available: The BWA system may not be running or may be down for maintenance.
  Connection Issues: There may be network issues or configuration problems preventing the SAP system from connecting to the BWA.
  Cube Not Indexed: The InfoCube may not be properly indexed in the BWA, meaning that the data is not available for retrieval.
  Data Consistency Issues: There may be inconsistencies between the data in the InfoCube and the data in the BWA.
  Authorization Issues: The user may not have the necessary authorizations to access the BWA or the specific InfoCube.
  
  Solutions:
  
  Check BWA Status: Ensure that the BWA system is up and running. You can check the status of the BWA using the BWA administration tools.
  Verify Connection: Check the connection settings between the SAP system and the BWA. Ensure that the configuration is correct and that there are no network issues.
  Re-index the Cube: If the cube is not indexed, you may need to re-index it. This can be done through the SAP BW administration transaction (e.g., RSA1) by selecting the InfoCube and choosing the option to create or update the index.
  Check Data Consistency: Ensure that the data in the InfoCube is consistent with the data in the BWA. You may need to perform data reconciliation or re-load data if inconsistencies are found.
  Review Authorizations: Check the user authorizations to ensure that the user has the necessary permissions to access the BWA and the InfoCube.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) to manage InfoCubes and check their status.
  BWA Administration: Familiarize yourself with BWA administration tools and monitoring options to keep track of the BWA's performance and status.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to BWA and InfoCubes. SAP Notes can provide patches or additional guidance for resolving known issues.
  Documentation: Refer to SAP documentation for detailed information on BWA configuration, indexing, and troubleshooting.
  
  By following these steps, you should be able to diagnose and resolve the RSD_TREX159 error effectively. If the issue persists, consider reaching out to SAP support for further assistance.