How To Fix T5211 - Error while determining RFC destination or server

SAP Error Message - Details

• Message type: E = Error

• Message class: T5 - SAPphone: Messages for telephony

• Message number: 211

• Message text: Error while determining RFC destination or server

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 T5211 - Error while determining RFC destination or server ?

  The SAP error message T5211, which states "Error while determining RFC destination or server," typically occurs when there is an issue with the Remote Function Call (RFC) configuration in your SAP system. This error can arise in various scenarios, such as when trying to connect to an external system or when executing a function module that requires an RFC connection.
  Causes of T5211 Error
  
  
  Incorrect RFC Destination Configuration: The RFC destination may not be correctly configured in the SAP system. This includes incorrect parameters, such as the target system's hostname, system number, or client.
  
  
  Network Issues: There may be network connectivity issues between the SAP system and the target system. This can include firewall settings, DNS resolution problems, or network outages.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured, preventing the establishment of the RFC connection.
  
  
  System Configuration Changes: Recent changes in system configuration, such as updates or patches, may have affected the RFC settings.
  
  
  Solutions to T5211 Error
  
  
  Check RFC Destination Configuration:
  
  Go to transaction code SM59 to check the configuration of the RFC destination.
  Ensure that the destination is correctly defined, including the target host, system number, and client.
  Test the connection using the "Connection Test" button in the SM59 transaction.
  
  
  
  Verify Network Connectivity:
  
  Check if you can ping the target system from the SAP server.
  Ensure that there are no firewall rules blocking the connection.
  Verify DNS settings to ensure that the hostname resolves correctly.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations in both the source and target systems.
  Check the roles and profiles assigned to the user.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running. You can check this using transaction SMGW.
  Look for any errors in the gateway logs that might indicate issues.
  
  
  
  Review System Changes:
  
  If the error started occurring after a recent change, review the changes made to the system configuration.
  Revert any changes if necessary and retest the RFC connection.
  
  
  
  Check for SAP Notes:
  
  Search for relevant SAP Notes that may address this specific error. Sometimes, SAP releases patches or notes that provide solutions for known issues.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SMGW: SAP Gateway Monitor
  SU01: User Maintenance (to check user authorizations)
  
  
  
  Logs and Traces:
  
  Check the system logs (transaction SM21) for any related error messages.
  Use transaction ST22 to check for dumps that may provide more context on the error.
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the steps you have already taken.
  
  
  By following these steps, you should be able to diagnose and resolve the T5211 error in your SAP system.