Thank you for your answers:
@Brian : i want an automatic way to do so
@Rafeeq : Exactely.
Like the notification below, it's the default notification that is sent to SEPM admin wich list all SEP client that are on 11.0 or 12.0 version
i want to add the same notification but including all version older than 14.0.3752.1000
Kind regrads
N.Achraf