A semi-colon -separated string that must contain the 'polling-uri=' value with the full URL to a <a href='http://go.microsoft.com/fwlink/p/?LinkID=314019'>Badge Schema XML file</a>. May also contain 'frequency=' value set to either 30, 60, 360, 720 or 1440 (default) which specifies (in minutes) how often the URL should be polled.