How To Fix RSRB1851 - Precalculation: processing started

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRB1 -

• Message number: 851

• Message text: Precalculation: processing started

Self-Explanatory Message

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• What is the cause and solution for SAP error message RSRB1851 - Precalculation: processing started ?

  The SAP error message RSRB1851, which states "Precalculation: processing started," typically indicates that a precalculation job for a query or report has been initiated but has not completed successfully. This message is often seen in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) environments, where precalculation is used to improve performance by precomputing data for reports.
  Causes:
  
  Long Processing Time: The precalculation job may take longer than expected due to the volume of data being processed or complex calculations involved.
  System Performance Issues: High system load or resource constraints (CPU, memory, I/O) can lead to delays in processing.
  Locking Issues: If the data being accessed is locked by another process, it can cause the precalculation to hang or fail.
  Configuration Issues: Incorrect settings in the query or precalculation settings can lead to processing problems.
  Data Issues: Problems with the underlying data, such as inconsistencies or missing data, can also cause precalculation to fail.
  
  Solutions:
  
  Monitor Job Status: Check the status of the precalculation job in the SAP BW system. Use transaction codes like SM37 to monitor background jobs and see if the job is still running or has failed.
  Check System Performance: Analyze system performance metrics to identify any bottlenecks. You may need to optimize system resources or schedule jobs during off-peak hours.
  Review Locks: Use transaction SM12 to check for any locks on the data being processed. If locks are found, you may need to resolve them before the precalculation can complete.
  Adjust Query Settings: Review the query settings and precalculation settings to ensure they are configured correctly. This may involve adjusting filters, aggregations, or other parameters.
  Data Validation: Validate the underlying data for any inconsistencies or issues that may be causing the precalculation to fail. This may involve running data quality checks or correcting data in the source systems.
  Increase Timeout Settings: If the job is timing out, consider increasing the timeout settings for the precalculation job.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSRT (for executing queries), RSBBS (for managing precalculation), and RSBATCH (for batch processing).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message RSRB1851. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation on precalculation and query performance optimization for best practices and troubleshooting tips.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.