How To Fix RSM870 - No active PSA exists on TRFC basis

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM -

• Message number: 870

• Message text: No active PSA exists on TRFC basis

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSM870 - No active PSA exists on TRFC basis ?

  The SAP error message RSM870: No active PSA exists on TRFC basis typically occurs in the context of data extraction and loading processes, particularly when working with SAP BW (Business Warehouse) and the Process Chain or when using the Data Transfer Process (DTP) to load data from a source system into the BW system.
  Cause:
  This error indicates that there is no active Persistent Staging Area (PSA) for the data transfer process (DTP) that is being executed. The PSA is a temporary storage area in SAP BW where data is initially loaded before it is transformed and loaded into the final data targets (like InfoCubes or DataStore Objects). The error can occur due to several reasons:
  
  No Data in PSA: The PSA might not have any data loaded yet, which means there is nothing to process.
  Inactive PSA: The PSA might be inactive or not properly configured for the specific data source.
  Incorrect DTP Settings: The DTP settings may not be correctly pointing to the right PSA or may not be configured to use the TRFC (Transactional RFC) method.
  Data Source Issues: The data source from which the data is being extracted may not be set up correctly or may not be active.
  
  Solution:
  To resolve the RSM870 error, you can follow these steps:
  
  
  Check PSA Status:
  
  Go to the Data Warehousing Workbench (transaction code RSA1).
  Navigate to the relevant InfoSource and check the status of the PSA.
  Ensure that the PSA is active and has data loaded into it.
  
  
  
  Load Data into PSA:
  
  If the PSA is empty, you may need to execute the data extraction process to load data into the PSA. This can be done by running the relevant InfoPackage.
  
  
  
  Verify DTP Configuration:
  
  Check the DTP settings to ensure that it is correctly configured to use the PSA.
  Make sure that the DTP is set to use the correct data source and that the extraction method is appropriate.
  
  
  
  Check Data Source:
  
  Ensure that the data source is active and correctly configured.
  If necessary, re-activate the data source or check for any issues in the source system.
  
  
  
  Monitor Process Chains:
  
  If the error occurs within a process chain, check the process chain logs for any additional errors or warnings that may provide more context.
  
  
  
  Check for Transport Issues:
  
  If the issue arose after a transport, ensure that all necessary objects were transported correctly and that there are no missing dependencies.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  RSA1: Data Warehousing Workbench
  RSMO: Monitor Data Transfer Processes
  RSPC: Process Chain Monitoring
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on PSAs, DTPs, and data extraction processes.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  
  By following these steps, you should be able to identify and resolve the cause of the RSM870 error in your SAP BW environment.