Notification-type-dependent layout was saved

What causes this issue?

For each notification type, a layout for the table of assigned objects
that is preset for a notification of this type must exist. A
corresponding layout does not yet exist for notification type &V1&.

System Response

The system has created layout &V2& for notification type &V1& and has
saved this layout.

How to fix this error?

You can now process the layout.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.