How To Fix /IWNGW/CM_HUB128 - Notification(s) not created as all recipients are invalid in hub

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 128

• Message text: Notification(s) not created as all recipients are invalid in hub

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWNGW/CM_HUB128 - Notification(s) not created as all recipients are invalid in hub ?

  The SAP error message /IWNGW/CM_HUB128 Notification(s) not created as all recipients are invalid in hub typically occurs in the context of the SAP Notification Hub, which is part of the SAP Cloud Platform. This error indicates that the system attempted to create notifications, but it could not find any valid recipients for those notifications.
  Causes:
  
  
  Invalid Recipient Configuration: The recipients configured in the system may not be valid. This could be due to incorrect email addresses, inactive users, or users who do not have the necessary permissions to receive notifications.
  
  
  Recipient Type Issues: The system may be trying to send notifications to a recipient type that is not supported or recognized by the notification service.
  
  
  User Status: The users intended to receive notifications may be inactive or have been deleted from the system.
  
  
  Missing Communication Data: The necessary communication data (like email addresses or phone numbers) for the recipients may be missing or incorrectly configured.
  
  
  System Configuration Issues: There may be issues with the configuration of the Notification Hub or the underlying communication settings.
  
  
  Solutions:
  
  
  Check Recipient Configuration:
  
  Verify that the recipients are correctly configured in the system. Ensure that their email addresses or other contact information is valid and active.
  
  
  
  Validate User Status:
  
  Check the status of the users who are supposed to receive notifications. Ensure they are active and have the necessary roles and permissions.
  
  
  
  Review Notification Settings:
  
  Go to the Notification Hub settings and review the configuration for recipients. Ensure that the recipient types are correctly set up.
  
  
  
  Test Communication Channels:
  
  Test the communication channels to ensure that they are functioning correctly. This may involve sending test notifications to verify that the system can reach the intended recipients.
  
  
  
  Check Logs for More Details:
  
  Review the application logs for more detailed error messages or warnings that could provide additional context about why the recipients are considered invalid.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for the Notification Hub for any specific configuration requirements or troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches or updates.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  Documentation: Review the SAP Help Portal for detailed documentation on configuring the Notification Hub and managing recipients.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message /IWNGW/CM_HUB128.