How To Fix SR123 - Could not select classic qRFC version for destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SR - RFC utilities

• Message number: 123

• Message text: Could not select classic qRFC version for destination &1

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 SR123 - Could not select classic qRFC version for destination &1 ?

  The SAP error message SR123, which states "Could not select classic qRFC version for destination &1," typically occurs in the context of using the qRFC (queued Remote Function Call) mechanism in SAP. This error indicates that the system is unable to determine the appropriate version of the qRFC for the specified destination.
  Causes:
  
  
  Destination Configuration Issues: The destination specified in the error message may not be correctly configured in the SAP system. This could include missing or incorrect settings in the RFC destination (transaction SM59).
  
  
  Version Compatibility: The qRFC version required for the destination may not be available or compatible with the current system configuration.
  
  
  Transport Layer Issues: If there are issues with the transport layer or if the transport routes are not correctly set up, it can lead to this error.
  
  
  System Settings: The system may not be set up to handle qRFC calls properly, possibly due to missing components or incorrect settings in the SAP Basis configuration.
  
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and check the configuration of the RFC destination mentioned in the error message. Ensure that it is correctly set up and that the connection test is successful.
  
  
  
  Review qRFC Settings:
  
  Ensure that the qRFC settings are correctly configured. You can check the qRFC settings in transaction SMQ1 (for outbound queues) and SMQ2 (for inbound queues).
  
  
  
  Check for Version Availability:
  
  Verify that the required version of qRFC is available and compatible with your SAP system. This may involve checking the SAP Notes or documentation for any updates or patches that need to be applied.
  
  
  
  Transport Configuration:
  
  If the error is related to transport issues, review the transport routes and ensure that they are correctly configured. You can check this in transaction STMS.
  
  
  
  System Logs:
  
  Check the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  
  
  Consult SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance. They can provide more detailed troubleshooting based on your specific system configuration.
  
  
  
  Related Information:
  
  qRFC: A mechanism in SAP that allows for asynchronous communication between systems, ensuring that function calls are executed in the order they were sent.
  RFC Destinations: These are configurations that define how SAP systems communicate with each other, including connection parameters and security settings.
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SMQ1: Outbound Queue Monitoring
  SMQ2: Inbound Queue Monitoring
  STMS: Transport Management System
  SM21: System Log
  
  
  
  By following these steps, you should be able to diagnose and resolve the SR123 error in your SAP system.