How To Fix /IWNGW/CM_HUB081 - Error in abap message channel while sending notification using websocket

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 081

• Message text: Error in abap message channel while sending notification using websocket

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 /IWNGW/CM_HUB081 - Error in abap message channel while sending notification using websocket ?

  The SAP error message /IWNGW/CM_HUB081 typically indicates an issue with the ABAP message channel when attempting to send notifications using WebSocket. This error can arise due to various reasons, including configuration issues, network problems, or issues with the WebSocket service itself.
  Causes:
  
  Configuration Issues: The WebSocket service may not be properly configured in the SAP system. This includes settings related to the message channel or the WebSocket endpoint.
  Network Problems: There may be network connectivity issues preventing the WebSocket from establishing a connection.
  Service Availability: The WebSocket service might not be running or could be experiencing downtime.
  Authorization Issues: The user or service account attempting to send the notification may not have the necessary permissions.
  Message Format Issues: The data being sent may not conform to the expected format, leading to processing errors.
  
  Solutions:
  
  
  Check Configuration:
  
  Verify the configuration of the WebSocket service in the SAP system. Ensure that all necessary parameters are set correctly.
  Check the settings in transaction /IWNGW/CM to ensure that the message channel is properly configured.
  
  
  
  Network Connectivity:
  
  Test the network connection to ensure that there are no firewalls or proxies blocking the WebSocket connection.
  Use tools like ping or traceroute to diagnose network issues.
  
  
  
  Service Status:
  
  Check if the WebSocket service is running. You can do this by accessing the service URL directly in a browser or using tools like Postman.
  Restart the WebSocket service if necessary.
  
  
  
  Authorization:
  
  Ensure that the user or service account has the necessary authorizations to send notifications via WebSocket.
  Check the roles and permissions assigned to the user.
  
  
  
  Message Format:
  
  Validate the data being sent to ensure it adheres to the expected format. Check for any missing or incorrect fields in the notification payload.
  
  
  
  Logs and Traces:
  
  Review the application logs and traces for more detailed error messages that can provide additional context about the issue.
  Use transaction SLG1 to check for application logs related to the WebSocket service.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to the WebSocket service.
  Documentation: Refer to the official SAP documentation for WebSocket services and notifications for best practices and troubleshooting tips.
  Community Forums: Engage with the SAP Community or forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.