How To Fix RT108 - System could not read RFC destination (&1), MTE: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 108

• Message text: System could not read RFC destination (&1), MTE: &2

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 RT108 - System could not read RFC destination (&1), MTE: &2 ?

  The SAP error message RT108 indicates that the system could not read the specified RFC (Remote Function Call) destination. This error can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes of RT108 Error
  
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This could include incorrect connection parameters, such as the target system's hostname, service, or user credentials.
  
  
  Network Issues: There may be network connectivity issues between the SAP system and the target system defined in the RFC destination. This could be due to firewall settings, network outages, or incorrect routing.
  
  
  Authorization Issues: The user credentials used in the RFC destination may not have the necessary authorizations to access the target system.
  
  
  Target System Unavailability: The target system defined in the RFC destination may be down or not reachable.
  
  
  SAP System Configuration: There may be issues with the SAP system configuration itself, such as missing or incorrect entries in the TMS (Transport Management System) or other related configurations.
  
  
  Solutions to RT108 Error
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the error.
  Verify the connection parameters, including the target host, service, and user credentials.
  Test the connection using the "Test Connection" button to ensure it is working correctly.
  
  
  
  Network Connectivity:
  
  Check the network connection between the SAP system and the target system.
  Use tools like ping or telnet to verify connectivity to the target host and port.
  
  
  
  Authorization Check:
  
  Ensure that the user credentials specified in the RFC destination have the necessary authorizations to access the target system.
  You may need to check the user roles and profiles in the target system.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running.
  Check for any maintenance activities or outages that may affect connectivity.
  
  
  
  Review SAP System Configuration:
  
  Ensure that the SAP system is correctly configured for RFC communication.
  Check TMS settings and other related configurations to ensure they are correct.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the RT108 error.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SICF: HTTP Service Hierarchy Maintenance
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on configuring RFC destinations and troubleshooting connectivity issues.
  
  
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to identify the cause of the RT108 error and implement the appropriate solution to resolve it.