How To Fix PF027 - Value missing for number of background work processes

SAP Error Message - Details

• Message type: E = Error

• Message class: PF - System parametrization messages in Computing Ctr Mgmt System

• Message number: 027

• Message text: Value missing for number of background work processes

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 PF027 - Value missing for number of background work processes ?

  The SAP error message PF027, which states "Value missing for number of background work processes," typically occurs when the system configuration for background work processes is incomplete or incorrectly set. This error is often encountered during system configuration or when trying to start the SAP system.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Configuration: The number of background work processes has not been defined in the instance profile.
  Profile Issues: The instance profile may not be loaded correctly, or there may be issues with the profile parameters.
  System Initialization: The system may not have been initialized properly, leading to missing parameters.
  
  Solution:
  To resolve the PF027 error, you can follow these steps:
  
  
  Check Instance Profile:
  
  Go to the SAP system and check the instance profile settings.
  Use transaction code RZ10 to display and edit the instance profile.
  Look for the parameter rdisp/wp_no_btc which defines the number of background work processes. Ensure that it has a valid numeric value (e.g., 2, 4, etc.).
  
  
  
  Modify Profile:
  
  If the parameter is missing or set to an invalid value, add or correct it.
  Save the changes to the profile.
  
  
  
  Restart the Instance:
  
  After making changes to the instance profile, restart the SAP instance for the changes to take effect.
  
  
  
  Check for Other Errors:
  
  After restarting, monitor the system logs for any other related errors that may need to be addressed.
  
  
  
  Consult Documentation:
  
  If you are unsure about the appropriate number of background work processes for your system, consult the SAP documentation or your system administrator for guidance based on your system's workload and requirements.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  RZ10: To manage instance profiles.
  RZ11: To check and maintain profile parameters.
  SM37: To monitor background jobs and their statuses.
  
  
  
  SAP Notes: Check SAP Notes related to background processing and work process configuration for additional guidance and troubleshooting steps.
  
  
  System Performance: The number of background work processes can impact system performance, so it is important to configure it according to the expected workload.
  
  
  By following these steps, you should be able to resolve the PF027 error and ensure that your SAP system is configured correctly for background processing.