Hi Patrick,
There is not currently a report source for this, but, the key thing is that the site will notify you of broken rules - So there is not much need to check unless you are getting those notifications.
I would recommend performing annual reviews of audiences though as a good rule of thumb, using a description in each audience as well allows you and others to fully understand what each audience does and the context of rules.
I hope this helps.
Kind regards,
David Cardiff
Support Services Team Leader
UNITED KINGDOM
www.totara.com
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