How To Fix SY521 - trfc inactive: &

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 521

• Message text: trfc inactive: &

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SY521 - trfc inactive: & ?

  The SAP error message SY521 indicates that a Transactional RFC (tRFC) is inactive. This error typically occurs when there is an issue with the communication between SAP systems or when the tRFC queue is not properly configured or is in an error state.
  Cause:
  
  Inactive tRFC Queue: The tRFC queue for the specified destination is inactive or has been deactivated.
  Network Issues: There may be network connectivity issues between the SAP systems.
  Configuration Issues: The RFC destination may not be correctly configured in the SAP system.
  System Errors: There could be underlying system errors or issues with the SAP application server.
  Authorization Issues: The user may not have the necessary authorizations to execute the tRFC.
  
  Solution:
  
  
  Check tRFC Queue:
  
  Use transaction code SM58 to check the status of the tRFC queues. Look for any entries that are in error status and analyze the details.
  If the queue is inactive, you may need to reactivate it.
  
  
  
  Check RFC Destination:
  
  Use transaction code SM59 to verify the configuration of the RFC destination. Ensure that the destination is correctly set up and that the connection is working.
  Test the connection to ensure that it is active and functioning.
  
  
  
  Check System Logs:
  
  Use transaction code SM21 to check the system logs for any related errors or warnings that might provide more context about the issue.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the SAP systems. You may need to involve your network team to check for any firewall or routing issues.
  
  
  
  Authorization Check:
  
  Verify that the user executing the tRFC has the necessary authorizations. You can check the user roles and profiles to ensure they have the required permissions.
  
  
  
  Restart Services:
  
  In some cases, restarting the relevant SAP services or the application server may resolve transient issues.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  tRFC: Transactional Remote Function Call is a protocol used in SAP for asynchronous communication between different SAP systems or between an SAP system and an external system.
  SM58: Transaction code used to monitor and manage tRFC queues.
  SM59: Transaction code used to configure and test RFC destinations.
  SM21: Transaction code used to view system logs for troubleshooting.
  
  If the issue persists after following these steps, it may be necessary to engage SAP support for further assistance.