How To Fix RK020 - Parallel processing has been started with &1 work processes

SAP Error Message - Details

• Message type: E = Error

• Message class: RK - Messages for Parallel Processing

• Message number: 020

• Message text: Parallel processing has been started with &1 work processes

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RK020 - Parallel processing has been started with &1 work processes ?

  The SAP error message RK020 indicates that parallel processing has been initiated with a specified number of work processes (denoted by &1). This message typically arises in the context of background processing or batch jobs in SAP, where multiple work processes are utilized to improve performance and efficiency.
  Cause:
  
  Configuration Settings: The number of work processes configured in the SAP system may not align with the requirements of the job being executed. If the system is set to use more work processes than available, it can lead to this message.
  Job Scheduling: The job may be scheduled to run with a specific number of parallel processes that exceed the available resources.
  Resource Limitations: The system may be experiencing resource limitations, such as CPU or memory constraints, which can affect the ability to allocate the requested number of work processes.
  
  Solution:
  
  
  Check Work Process Configuration:
  
  Go to transaction RZ10 or RZ11 to review the profile parameters related to work processes. Ensure that the number of work processes configured matches the expected workload.
  Adjust the parameters if necessary, such as rdisp/wp_no_dia for dialog work processes or rdisp/wp_no_btc for background work processes.
  
  
  
  Review Job Scheduling:
  
  Use transaction SM37 to check the status of the job that triggered the error. Ensure that the job is not requesting more parallel processes than what is available.
  If needed, modify the job to reduce the number of parallel processes.
  
  
  
  Monitor System Resources:
  
  Use transaction ST02 (Tune Summary) or ST03N (Workload Analysis) to monitor system performance and resource usage.
  If the system is under heavy load, consider optimizing the workload or increasing system resources (CPU, memory).
  
  
  
  Adjust Parallel Processing Settings:
  
  If the job is designed to run with parallel processing, ensure that the settings are appropriate for the current system configuration. You may need to adjust the parallel processing settings in the job definition.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM37: Job Monitoring
  RZ10: Profile Parameter Maintenance
  RZ11: Profile Parameter Display
  ST02: Tune Summary
  ST03N: Workload Analysis
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring work processes and managing background jobs.
  
  
  Performance Tuning: Consider engaging in performance tuning activities if the system frequently encounters resource-related issues.
  
  
  By following these steps, you should be able to address the RK020 error and optimize the parallel processing capabilities of your SAP system.