Notification type Q9 reserved for notifications that originate in SNC

What causes this issue?

Notification type Q9 is reserved for notifications that originate from
an external system (such as SNC) and have been transmitted to the SAP
system.
You therefore cannot create notifications in the SAP system for this
notification type, but you can display or change them.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you want to create a notification that is to be transmitted to an
external system via Enterprise Service, either use notification type Q8
or your own notification type that is intended for this.
If you want to change or display data for a notification with
notification type Q9, choose one of the change transactions, such as
QM02, or a display transaction, such as QM03.
Note that if you make changes to notifications of notification type Q9,
these notifications are transmitted to the external system with the
changed data.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.