How To Fix /IWXBE/CORE122 - MQTT connection - error during message reception

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 122

• Message text: MQTT connection - error during message reception

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/CORE122 - MQTT connection - error during message reception ?

  The SAP error message /IWXBE/CORE122 related to MQTT (Message Queuing Telemetry Transport) indicates that there is an issue during the message reception phase of the MQTT connection. This error can arise from various causes, and understanding these can help in troubleshooting and resolving the issue.
  Possible Causes:
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the MQTT broker. This could include firewall settings, network outages, or incorrect network configurations.
  
  
  Broker Configuration: The MQTT broker may not be configured correctly. This includes issues such as incorrect port settings, authentication problems, or the broker being down.
  
  
  Client Configuration: The SAP system's MQTT client configuration might be incorrect. This could involve wrong credentials, incorrect topic subscriptions, or misconfigured QoS (Quality of Service) settings.
  
  
  Message Format Issues: The messages being sent or received may not conform to the expected format, leading to parsing errors.
  
  
  Resource Limitations: The SAP system or the MQTT broker may be experiencing resource limitations, such as memory or CPU constraints, which can affect message processing.
  
  
  Solutions:
  
  
  Check Network Connectivity: Ensure that the SAP system can reach the MQTT broker. You can use tools like ping or telnet to test connectivity to the broker's IP address and port.
  
  
  Review Broker Logs: Check the logs of the MQTT broker for any error messages or warnings that could provide insight into the issue.
  
  
  Validate Configuration: Double-check the configuration settings for both the SAP system and the MQTT broker. Ensure that the correct credentials, topics, and QoS levels are being used.
  
  
  Test with a Different Client: If possible, use a different MQTT client to connect to the broker and send/receive messages. This can help determine if the issue is specific to the SAP system or a broader problem with the broker.
  
  
  Monitor Resource Usage: Check the resource usage on both the SAP system and the MQTT broker. If either system is under heavy load, consider optimizing performance or scaling resources.
  
  
  Update Software: Ensure that both the SAP system and the MQTT broker are running the latest versions, as updates may contain bug fixes and improvements.
  
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant notes or patches related to MQTT and the specific error message.
  Documentation: Review the official SAP documentation for MQTT integration to ensure that all configurations are set up correctly.
  Community Forums: Engage with SAP community forums or other technical forums where similar issues may have been discussed.
  
  By systematically addressing these areas, you should be able to identify and resolve the issue causing the /IWXBE/CORE122 error in your SAP system.