How To Fix /IWXBE/CORE123 - MQTT channel error - MQTT connection error

/IWXBE/CORE123 - Overview

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 123

• Message text: MQTT channel error - MQTT 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/CORE123 - MQTT channel error - MQTT connection error ?

  The SAP error message /IWXBE/CORE123 MQTT channel error - MQTT connection error typically indicates that there is an issue with the MQTT (Message Queuing Telemetry Transport) connection in the SAP system. This error can arise due to various reasons, including network issues, configuration problems, or issues with the MQTT broker.
  Causes:
  
  Network Issues: The SAP system may not be able to reach the MQTT broker due to network connectivity problems.
  Broker Configuration: The MQTT broker may not be configured correctly, or it may not be running.
  Authentication Issues: If the MQTT broker requires authentication, incorrect credentials can lead to connection failures.
  Firewall Restrictions: Firewalls may be blocking the necessary ports for MQTT communication.
  Protocol Mismatch: The version of the MQTT protocol being used may not be compatible between the SAP system and the broker.
  Resource Limitations: The broker may be overloaded or have reached its connection limit.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the