How To Fix RSD_TREX545 - RFC connection to '&1' not active

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 545

• Message text: RFC connection to '&1' not active

What causes this issue?

The RFC connection to the specified RFC destination could not be establi
shed.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the spelling and check the RFC destination in transaction SM59.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX545 - RFC connection to '&1' not active ?

  The SAP error message RSD_TREX545 indicates that there is an issue with the RFC (Remote Function Call) connection to the TREX (Text Retrieval and Extraction) server. This error typically occurs when the connection to the TREX server is not active or cannot be established. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Inactive RFC Connection: The RFC connection to the TREX server is not active or has been incorrectly configured.
  Network Issues: There may be network connectivity issues between the SAP system and the TREX server.
  TREX Server Down: The TREX server itself may be down or not running.
  Authorization Issues: The user may not have the necessary authorizations to access the TREX server.
  Configuration Errors: There may be misconfigurations in the SAP system or TREX settings.
  
  Solutions:
  
  
  Check RFC Connection:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC connection that corresponds to the TREX server.
  Test the connection by using the "Connection Test" option. If it fails, check the configuration settings.
  
  
  
  Verify TREX Server Status:
  
  Ensure that the TREX server is up and running. You can check the TREX administration tools or logs to confirm its status.
  
  
  
  Network Connectivity:
  
  Check for any network issues that might be preventing the SAP system from reaching the TREX server. This can include firewall settings, DNS issues, or routing problems.
  
  
  
  Review Authorization:
  
  Ensure that the user account being used to connect to the TREX server has the necessary authorizations. This may involve checking user roles and permissions.
  
  
  
  Check Configuration:
  
  Review the configuration settings in both the SAP system and the TREX server to ensure they are correct. This includes checking the TREX instance settings and ensuring they match the RFC connection settings.
  
  
  
  Restart Services:
  
  If the TREX server is running but still not responding, consider restarting the TREX services or the entire server.
  
  
  
  Consult Logs:
  
  Check the SAP and TREX logs for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to TREX and RFC connections for any known issues or patches that may address the problem.
  Documentation: Refer to the official SAP documentation for TREX and RFC connections for detailed configuration guidelines.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the RSD_TREX545 error effectively.