What endpoint might I poll to get the Fully Qualified Domain Name for each device, like Wireless Access Points?

Given that the REST API has been around for almost four years, is there a planned end of life announcement for the XML API!

Is it a known issue that interferenceHealth and utilizationHealth return the same responses?  For example, we're getting responses like these (see screenshot) so I'm looking for a face validity check.https://developer.cisco.com/docs/dna-center/#!api-...

Is there a DevNet Sandbox that includes DNA Center, Catalyst Switches, Catalyst Wireless Access Points, and a 9800-series Wireless Controller?