How To Fix /IWXBE/CORE120 - MQTT connection request sent

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 120

• Message text: MQTT connection request sent

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 /IWXBE/CORE120 - MQTT connection request sent ?

  The SAP error message /IWXBE/CORE120 related to MQTT (Message Queuing Telemetry Transport) typically indicates an issue with the connection request for MQTT communication. This error can arise due to various reasons, including configuration issues, network problems, or service availability.
  Causes:
  
  Configuration Issues: Incorrect settings in the MQTT configuration, such as broker address, port, or authentication credentials.
  Network Problems: Firewalls or network policies blocking the MQTT connection.
  Broker Availability: The MQTT broker may be down or unreachable.
  Protocol Mismatch: The version of MQTT being used may not be compatible with the broker.
  Resource Limitations: The SAP system may be hitting resource limits, such as maximum connections or memory issues.
  
  Solutions:
  
  
  Check Configuration:
  
  Verify the MQTT configuration settings in your SAP system. Ensure that the broker address, port, and credentials are correct.
  Check if the MQTT client ID is unique and not conflicting with other clients.
  
  
  
  Network Connectivity:
  
  Test the network connection to the MQTT broker. Use tools like ping or telnet to check if the broker is reachable on the specified port.
  Ensure that firewalls or security groups allow traffic on the MQTT port (usually 1883 for unencrypted connections or 8883 for encrypted connections).
  
  
  
  Broker Status:
  
  Check the status of the MQTT broker to ensure it is running and accepting connections.
  Review the broker logs for any errors or warnings that might indicate why connections are being refused.
  
  
  
  Protocol Compatibility:
  
  Ensure that the version of MQTT being used in SAP is compatible with the broker. If necessary, update the broker or adjust the settings in SAP.
  
  
  
  Resource Monitoring:
  
  Monitor the SAP system for resource usage. If the system is under heavy load, consider optimizing performance or scaling resources.
  
  
  
  Error Logs:
  
  Review the SAP application logs for additional error messages or context that might help diagnose the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to MQTT connectivity.
  Documentation: Refer to the official SAP documentation for MQTT configuration and troubleshooting.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.