In Discovery, application models can change dynamically (server added to cluster etc), here a example to get notified when a automatic drift is detected. In the case of a Major Change "Review suggested" status a Major event is created. The pattern could also notify the application owner about this drifts ...
Here a example TPL to send notification from BMC Discovery about Changes (Drift) in Application Models to Slack (www.slack.com).
the pattern has some configuration options needed to configure this for your slack account:
PS: this is just a example, no guaranty or support possible ;-)