How To Fix /IWXBE/CORE145 - MQTT connection disconnected for channel '&1' and events are reset.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 145

• Message text: MQTT connection disconnected for channel '&1' and events are reset.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWXBE/CORE145 - MQTT connection disconnected for channel '&1' and events are reset. ?

  The SAP error message /IWXBE/CORE145 indicates that there is a problem with the MQTT (Message Queuing Telemetry Transport) connection for a specific channel in the SAP system. This error typically occurs in the context of SAP's integration with IoT (Internet of Things) services, where MQTT is used for lightweight messaging between devices and applications.
  Cause:
  
  Network Issues: The MQTT connection may be disrupted due to network problems, such as loss of connectivity, firewall restrictions, or incorrect network configurations.
  Broker Issues: The MQTT broker (the server that manages the MQTT connections) may be down, misconfigured, or experiencing high load, leading to disconnections.
  Timeouts: If the connection is idle for too long, it may time out and disconnect.
  Configuration Errors: Incorrect settings in the MQTT channel configuration, such as wrong credentials, incorrect broker address, or port issues.
  Resource Limitations: The system may be running out of resources (e.g., memory, CPU) which can lead to disconnections.
  
  Solution:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the MQTT broker is stable. Test connectivity using tools like ping or telnet to the broker's address and port.
  Verify Broker Status: Check if the MQTT broker is running and accessible. Look for any logs or alerts from the broker that might indicate issues.
  Review Configuration: Double-check the MQTT channel configuration in SAP. Ensure that the broker address, port, and authentication details are correct.
  Increase Timeout Settings: If applicable, consider increasing the timeout settings for the MQTT connection to prevent disconnections due to inactivity.
  Monitor Resource Usage: Use monitoring tools to check the resource usage of the SAP system and the MQTT broker. If resources are low, consider scaling up the infrastructure.
  Reconnect Logic: Implement or verify that there is a reconnect logic in place in your application to handle disconnections gracefully.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to MQTT connections. SAP frequently updates its documentation and provides fixes for known issues.
  Logs: Review the logs in both the SAP system and the MQTT broker for any additional error messages or warnings that could provide more context about the disconnection.
  Documentation: Refer to the official SAP documentation for the specific version you are using, as it may contain additional troubleshooting steps or configuration guidelines.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed logs and error messages for better diagnosis.