How To Fix /IWXBE/CORE144 - MQTT on connection - No events to be picked for channel '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 144

• Message text: MQTT on connection - No events to be picked for channel '&1'

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/CORE144 - MQTT on connection - No events to be picked for channel '&1' ?

  The SAP error message /IWXBE/CORE144 MQTT on connection - No events to be picked for channel '&1' typically indicates that there are no events available for processing in the specified MQTT channel. This can occur in systems that utilize the MQTT protocol for event-driven communication, particularly in SAP applications that integrate with IoT or other event-based architectures.
  Causes:
  
  No Events Available: The most straightforward cause is that there are simply no events queued for the specified channel at the time of the connection attempt.
  Configuration Issues: There may be misconfigurations in the MQTT channel settings, such as incorrect topic subscriptions or channel parameters.
  Network Issues: Connectivity problems between the SAP system and the MQTT broker could prevent events from being received.
  Broker Issues: The MQTT broker itself may be experiencing issues, such as being down or misconfigured.
  Event Generation Issues: The source generating events may not be producing them due to its own issues or misconfigurations.
  
  Solutions:
  
  Check Event Generation: Ensure that the source system or application that is supposed to generate events is functioning correctly and is actively producing events.
  Verify Channel Configuration: Review the configuration of the MQTT channel in SAP to ensure that it is set up correctly, including the correct topic subscriptions.
  Monitor MQTT Broker: Check the status of the MQTT broker to ensure it is running and properly configured. Look for any logs or error messages that might indicate issues.
  Network Connectivity: Ensure that there are no network issues preventing the SAP system from connecting to the MQTT broker. This may involve checking firewalls, network routes, and other connectivity aspects.
  Testing: Use tools or scripts to test the MQTT connection and verify that events can be sent and received as expected.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific version of the software you are using, as it may provide additional insights into MQTT configuration and troubleshooting.
  MQTT Protocol: Understanding the basics of the MQTT protocol can help in diagnosing issues related to message queuing and event handling.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after checking these areas, consider reaching out to SAP support for further assistance, providing them with detailed logs and context around the error.