Is this field only available for Windows DCs?
In our own environment this data is only populated in our DCs, not on any of our other Windows 2008/2012 servers and then they reflect the continent, not the physical location.
I tried using a bit of Powershell (and wbemtest) to set the field in Win32_NTDomain, but Solarwinds never seems to pick up on it.
Any ideas?