How To Fix RS_B4HPREP128 - There is still data in the PSA of DataSource &1 which must be processed

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_B4HPREP - B4H Transfer Preparation Messages

• Message number: 128

• Message text: There is still data in the PSA of DataSource &1 which must be processed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_B4HPREP128 - There is still data in the PSA of DataSource &1 which must be processed ?

  The SAP error message RS_B4HPREP128 indicates that there is still data in the Persistent Staging Area (PSA) of a DataSource that needs to be processed before you can proceed with certain operations, such as data extraction or loading into a target system. This error typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when working with data extraction processes.
  Cause:
  The primary cause of this error is that there are records in the PSA table associated with the specified DataSource that have not yet been processed. This can happen for several reasons:
  
  Data has been loaded into the PSA but not yet transferred to the InfoProvider (e.g., InfoCube, DataStore Object).
  There may be a failure in the data transfer process, leaving data in the PSA.
  The data load process was interrupted or not completed successfully.
  
  Solution:
  To resolve the RS_B4HPREP128 error, you can follow these steps:
  
  
  Check the PSA Data:
  
  Go to the Data Warehousing Workbench (transaction code RSA1).
  Navigate to the DataSource in question and check the PSA for any unprocessed records.
  You can view the data in the PSA by selecting the DataSource and clicking on the "Display PSA" option.
  
  
  
  Process the Data:
  
  If there are records in the PSA, you need to process them. You can do this by:
  
  Running the data transfer process (DTP) to move the data from the PSA to the target InfoProvider.
  If there are errors in the data, you may need to correct them before processing.
  
  
  
  
  
  Delete Unwanted Data:
  
  If the data in the PSA is no longer needed, you can delete it. This can be done by selecting the records in the PSA and choosing the delete option.
  Be cautious with this step, as deleting data from the PSA means it will be lost unless it is backed up elsewhere.
  
  
  
  Check for Errors:
  
  If the data transfer process fails, check the error logs to identify the cause of the failure. You can find error logs in the DTP monitor or the process chain logs.
  
  
  
  Re-run the Data Load:
  
  After processing or deleting the data, you can re-run the data load process to ensure that the DataSource is functioning correctly.
  
  
  
  Related Information:
  
  PSA (Persistent Staging Area): The PSA is a temporary storage area in SAP BW where data is stored after extraction from the source system and before it is loaded into the target InfoProvider.
  Data Transfer Process (DTP): A DTP is used to transfer data from the PSA to the target InfoProvider. It can be configured to handle various data transformation and loading scenarios.
  Monitoring Tools: Use transaction codes like RSA1 (Data Warehousing Workbench), RSMO (Process Chain Monitoring), and RSPC (Process Chain Maintenance) to monitor and manage data loads and processes.
  
  By following these steps, you should be able to resolve the RS_B4HPREP128 error and ensure that your data processing in SAP BW is functioning smoothly.