How To Fix /IWXBE/CORE152 - MQTT connection not established

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 152

• Message text: MQTT connection not established

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/CORE152 - MQTT connection not established ?

  The SAP error message /IWXBE/CORE152 MQTT connection not established typically indicates that there is an issue with establishing a connection to the MQTT (Message Queuing Telemetry Transport) broker from the SAP system. This can occur due to various reasons, including configuration issues, network problems, or broker availability.
  Causes:
  
  Broker Unavailability: The MQTT broker may be down or not reachable due to network issues.
  Configuration Issues: Incorrect configuration settings in the SAP system for the MQTT connection, such as wrong broker address, port, or credentials.
  Firewall Restrictions: Firewalls or security groups may be blocking the connection to the MQTT broker.
  Protocol Mismatch: The version of the MQTT protocol being used may not be compatible with the broker.
  Resource Limitations: The SAP system may be running out of resources (e.g., memory, connections) to establish a new connection.
  
  Solutions:
  
  Check Broker Status: Ensure that the MQTT broker is running and accessible. You can use tools like ping or telnet to check connectivity to the broker's address and port.
  Verify Configuration: Review the configuration settings in the SAP system for the MQTT connection. Ensure that the broker address, port, and any authentication credentials are correct.
  Firewall Settings: Check firewall settings on both the SAP system and the MQTT broker to ensure that the necessary ports are open for communication.
  Protocol Compatibility: Verify that the MQTT version being used by the SAP system is compatible with the broker. If necessary, update the configuration to match the broker's supported version.
  Resource Monitoring: Monitor the SAP system's resources to ensure that it has enough capacity to establish new connections. If necessary, optimize resource usage or increase available resources.
  Logs and Traces: Check the SAP system logs and traces for more detailed error messages that can provide additional context about the connection failure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to MQTT connections.
  Documentation: Refer to the official SAP documentation for configuring MQTT connections, which may provide additional insights and best practices.
  Community Forums: Engage with SAP community forums or support channels for assistance 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.