How To Fix ESH_CHECK_CONN034 - ICM communication failure while accessing TREX with RFC desination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_CHECK_CONN - Check connector consistency

• Message number: 034

• Message text: ICM communication failure while accessing TREX with RFC desination &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_CHECK_CONN034 - ICM communication failure while accessing TREX with RFC desination &1 ?

  The SAP error message ESH_CHECK_CONN034 indicates an ICM (Internet Communication Manager) communication failure while trying to access TREX (Text Retrieval and Extraction) using a specified RFC (Remote Function Call) destination. This error typically arises in scenarios where the SAP system is unable to establish a connection to the TREX server.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the TREX server.
  Incorrect RFC Destination: The RFC destination configuration may be incorrect, including wrong hostnames, ports, or credentials.
  TREX Server Down: The TREX server might be down or not running.
  Firewall Restrictions: Firewalls may be blocking the communication between the SAP system and the TREX server.
  ICM Configuration Issues: There may be misconfigurations in the ICM settings that prevent proper communication.
  Authorization Issues: The user credentials used in the RFC destination may not have the necessary permissions to access TREX.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to verify that the SAP system can reach the TREX server on the specified port.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the hostname, service (port), and connection type are correct.
  Test the connection from SM59 to see if it is successful.
  
  
  
  Check TREX Server Status:
  
  Ensure that the TREX server is up and running. You can check the TREX administration tools or logs for any issues.
  
  
  
  Review Firewall Settings:
  
  Ensure that there are no firewall rules blocking the communication between the SAP system and the TREX server.
  
  
  
  ICM Configuration:
  
  Check the ICM settings in transaction RZ10 or RZ11 to ensure that they are correctly configured for HTTP/HTTPS communication.
  
  
  
  Authorization Check:
  
  Verify that the user credentials used in the RFC destination have the necessary authorizations to access TREX.
  
  
  
  Check Logs:
  
  Review the SAP application logs (transaction SLG1) and the TREX logs for any additional error messages that might provide more context.
  
  
  
  Related Information:
  
  TREX Documentation: Refer to the official SAP documentation for TREX for detailed configuration and troubleshooting steps.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide patches.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the communication failure indicated by the ESH_CHECK_CONN034 error message.