How To Fix /IWXBE/CORE116 - MQTT channel connecting - MQTT client connection error

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 116

• Message text: MQTT channel connecting - MQTT client connection error

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWXBE/CORE116 - MQTT channel connecting - MQTT client connection error ?

  The SAP error message /IWXBE/CORE116 related to MQTT (Message Queuing Telemetry Transport) indicates that there is an issue with the MQTT client connection. This error can arise due to various reasons, and understanding the cause is essential for troubleshooting. Here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: The MQTT broker may be unreachable due to network problems, such as firewall restrictions or incorrect network configurations.
  Broker Configuration: The MQTT broker may not be configured correctly, or it may not be running.
  Authentication Issues: If the MQTT broker requires authentication (username/password), incorrect credentials can lead to connection failures.
  Protocol Mismatch: The client and broker may be using incompatible versions of the MQTT protocol.
  Resource Limitations: The broker may be overloaded or have reached its maximum number of connections.
  SSL/TLS Issues: If the connection is secured using SSL/TLS, there may be issues with certificates or encryption settings.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the SAP system can reach the MQTT broker. You can use tools like ping or telnet to test connectivity.
  Verify that there are no firewall rules blocking the connection.
  
  
  
  Verify Broker Status:
  
  Ensure that the MQTT broker is running and properly configured. Check the broker logs for any errors or warnings.
  
  
  
  Check Credentials:
  
  If authentication is required, verify that the username and password are correct. Update the configuration in the SAP system if necessary.
  
  
  
  Review MQTT Configuration:
  
  Check the MQTT client configuration in SAP to ensure that the broker address, port, and other settings are correct.
  
  
  
  Protocol Compatibility:
  
  Ensure that both the MQTT client and broker are using compatible versions of the MQTT protocol.
  
  
  
  Monitor Broker Load:
  
  Check the load on the MQTT broker. If it is overloaded, consider scaling the broker or optimizing the number of connections.
  
  
  
  SSL/TLS Configuration:
  
  If using SSL/TLS, ensure that the certificates are valid and properly configured. Check for any issues related to certificate trust.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for MQTT integration for specific configuration details and troubleshooting steps.
  Broker Documentation: Consult the documentation for the specific MQTT broker you are using (e.g., Mosquitto, HiveMQ, etc.) for additional troubleshooting tips.
  Logs: Check both the SAP logs and the MQTT broker logs for more detailed error messages that can provide further insights into the issue.
  
  By systematically checking these areas, you should be able to identify and resolve the connection error related to the MQTT channel in SAP.