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

/IWNGW/CM_HUB128 - Overview

• 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

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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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/IWNGW/CM_HUB128 - Details

• 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