How To Fix ESH_CHECK_CONN033 - Communication failure while accessing TREX with RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_CHECK_CONN - Check connector consistency

• Message number: 033

• Message text: Communication failure while accessing TREX with RFC 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 ESH_CHECK_CONN033 - Communication failure while accessing TREX with RFC destination &1 ?

  The SAP error message ESH_CHECK_CONN033 indicates a communication failure while trying to access the TREX (Text Retrieval and Extraction) system using a specified RFC (Remote Function Call) destination. This error can occur due to various reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the TREX server.
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  TREX Server Down: The TREX server might be down or not running.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Firewall Restrictions: Firewalls may be blocking the communication between the SAP system and the TREX server.
  Incorrect Hostname or Port: The hostname or port specified in the RFC destination may be incorrect.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to check if the SAP system can reach the TREX server.
  Ensure that there are no network outages or issues.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination used to connect to TREX.
  Test the connection using the "Connection Test" button.
  
  
  
  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 User Authorizations:
  
  Ensure that the user credentials used in the RFC destination have the necessary authorizations to access TREX.
  
  
  
  Firewall Configuration:
  
  Check if there are any firewall rules that might be blocking the communication.
  Ensure that the required ports for TREX communication are open.
  
  
  
  Correct Hostname and Port:
  
  Verify that the hostname and port specified in the RFC destination are correct.
  Update them if necessary.
  
  
  
  Related Information:
  
  TREX Documentation: Refer to the official SAP documentation for TREX for more details on configuration and troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to TREX and RFC connections.
  System Logs: Review system logs (transaction SM21) for any additional error messages that might provide more context about the failure.
  
  By following these steps, you should be able to identify and resolve the communication failure with TREX. If the issue persists, consider reaching out to SAP support for further assistance.