How To Fix /IWXBE/CORE216 - Connection test error in MQTT. Verify Destination.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 216

• Message text: Connection test error in MQTT. Verify Destination.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWXBE/CORE216 - Connection test error in MQTT. Verify Destination. ?

  The SAP error message /IWXBE/CORE216 Connection test error in MQTT. Verify Destination typically indicates an issue with the connection settings for the MQTT (Message Queuing Telemetry Transport) protocol in your SAP system. This error can arise due to various reasons, including misconfiguration, network issues, or incorrect credentials.
  Causes:
  
  Incorrect Destination Configuration: The destination settings for the MQTT connection may be incorrect. This includes the hostname, port, or protocol settings.
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the MQTT broker.
  Authentication Issues: If the MQTT broker requires authentication, incorrect credentials (username/password) can lead to connection failures.
  Broker Unavailability: The MQTT broker may be down or not reachable due to firewall settings or other network restrictions.
  SSL/TLS Configuration: If SSL/TLS is required for the connection, misconfiguration in certificates or protocols can cause connection errors.
  
  Solutions:
  
  
  Verify Destination Configuration:
  
  Go to the SAP GUI and check the destination settings in transaction SM59.
  Ensure that the hostname, port, and protocol are correctly configured for the MQTT broker.
  
  
  
  Test Network Connectivity:
  
  Use tools like ping or telnet to check if the SAP system can reach the MQTT broker on the specified port.
  Ensure that there are no firewall rules blocking the connection.
  
  
  
  Check Authentication Credentials:
  
  If the MQTT broker requires authentication, verify that the username and password are correct.
  Update the credentials in the destination configuration if necessary.
  
  
  
  Check Broker Status:
  
  Ensure that the MQTT broker is running and accessible.
  Check the broker logs for any errors or issues that might indicate why the connection is failing.
  
  
  
  Review SSL/TLS Settings:
  
  If using SSL/TLS, ensure that the certificates are correctly installed and configured.
  Verify that the correct SSL/TLS version is being used.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for MQTT configuration to ensure all settings are correctly applied.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues with MQTT connections.
  Logs: Review the application logs in SAP (transaction SLG1) for more detailed error messages that can provide additional context.
  MQTT Broker Documentation: Consult the documentation for the specific MQTT broker you are using for any additional configuration requirements or troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the connection test error in MQTT. If the issue persists, consider reaching out to SAP support for further assistance.