During the regular audit checks, Adalysis will trigger an alert if any of the adgroups have more than 50 (or your custom number) keywords. You will see the alerts on your Dashboard, under the tab Audit Alerts / Keywords.
By default, you will be alerted if there are more than 50 keywords. You can customize this number as described below to suit your account needs.
Clicking on the alert displayed in your dashboard you’ll be able to review the list of these adgroups