How To Fix RSDS239 - Secondary index &1 (PSA table &2) does not match DataSource key

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 239

• Message text: Secondary index &1 (PSA table &2) does not match DataSource key

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS239 - Secondary index &1 (PSA table &2) does not match DataSource key ?

  The SAP error message RSDS239 indicates that there is a mismatch between the secondary index of a Persistent Staging Area (PSA) table and the DataSource key. This typically occurs in the context of SAP BW (Business Warehouse) when there are changes made to the DataSource or the structure of the underlying data that are not reflected in the PSA table.
  Cause:
  
  DataSource Changes: The structure of the DataSource has been modified (e.g., fields added, removed, or changed) after the PSA table was created or populated.
  Inconsistent Metadata: The metadata of the DataSource and the PSA table are not in sync, leading to discrepancies in the expected keys.
  Manual Changes: Manual changes to the PSA table or the DataSource configuration can lead to inconsistencies.
  
  Solution:
  To resolve the RSDS239 error, you can follow these steps:
  
  
  Check DataSource Configuration:
  
  Go to the DataSource in the SAP BW system and verify its structure. Ensure that it matches the structure of the PSA table.
  If there have been changes to the DataSource, you may need to regenerate the PSA table.
  
  
  
  Recreate the PSA Table:
  
  If the DataSource structure has changed significantly, you may need to delete the existing PSA table and recreate it. This can be done by:
  
  Deleting the existing PSA data (if it is not needed).
  Re-extracting data from the source system to populate the PSA table again.
  
  
  
  
  
  Check for Active Transformations:
  
  Ensure that there are no active transformations that might be affecting the DataSource or PSA table.
  
  
  
  Use Transaction RSA1:
  
  Go to the Data Warehousing Workbench (transaction RSA1).
  Navigate to the DataSource and check for any inconsistencies or errors.
  You can also use the "Check" function to validate the DataSource.
  
  
  
  Update the DataSource:
  
  If the DataSource has been modified, ensure that you have updated the DataSource in the BW system to reflect these changes.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  
  
  Related Information:
  
  PSA (Persistent Staging Area): A temporary storage area in SAP BW where data is stored before it is transformed and loaded into the data warehouse.
  DataSource: A source of data that can be extracted from various systems (like SAP ERP, flat files, etc.) into SAP BW.
  Transformation: The process of converting data from the source format to the format required by the target data model in SAP BW.
  
  By following these steps, you should be able to resolve the RSDS239 error and ensure that your DataSource and PSA table are properly aligned.