How To Fix RSBK304 - WO-DSO &1 reduced to &2, archived to &3; no parallel extraction allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBK - Messages for the Data Transfer Process

• Message number: 304

• Message text: WO-DSO &1 reduced to &2, archived to &3; no parallel extraction allowed

Self-Explanatory Message

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• What is the cause and solution for SAP error message RSBK304 - WO-DSO &1 reduced to &2, archived to &3; no parallel extraction allowed ?

  The SAP error message RSBK304 indicates that a DataStore Object (DSO) is being reduced in size and archived, which is not allowed for parallel extraction. This error typically occurs in the context of data extraction processes in SAP BW (Business Warehouse) when trying to extract data from a DSO that is in a state that does not permit parallel processing.
  Cause:
  
  Data Reduction: The DSO is being reduced in size, which means that the data is being filtered or aggregated in a way that changes its structure or volume.
  Archiving: The DSO is being archived, which is a process that moves data to a storage area to free up space in the active database.
  Parallel Extraction: The error indicates that the DSO is not allowed to be extracted in parallel while it is being reduced or archived. This is a restriction in SAP BW to ensure data integrity and consistency during the extraction process.
  
  Solution:
  
  Check DSO Status: Ensure that the DSO is not in a state of reduction or archiving when you attempt to perform a parallel extraction. You may need to wait until the current process is complete.
  Sequential Extraction: If you need to extract data from the DSO, consider performing the extraction in a sequential manner rather than in parallel. This can be done by adjusting the extraction settings in your data flow or process chain.
  Review Process Chains: If you are using process chains for data extraction, review the steps to ensure that they are configured correctly and that there are no conflicting processes that might be causing the DSO to be reduced or archived during extraction.
  Monitor Background Jobs: Check for any background jobs that might be running and affecting the DSO. You can use transaction codes like SM37 to monitor job statuses.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of BW you are using for any additional guidance or updates regarding this error.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to manage your DSOs and monitor data flows.
  SAP Notes: Look for relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Performance Considerations: Understand the implications of parallel vs. sequential extraction on performance and data load times, and adjust your data extraction strategy accordingly.
  
  By following these steps, you should be able to resolve the RSBK304 error and successfully manage your data extraction processes in SAP BW.