When devices are discovered, GPS coordinates or physical addresses can be pulled in via SNMP. However, the Geo Map isn't automatically updated with that informatoin as the device is discovered. You have to go into each devices settings, modify the location (even if you just add a space at the end of the existing data in the field), and save it before the Geo Map is updated. Anyone who wants to show their devices on a Geo Map will have to manually do this every time a new device is discovered. It would save a lot of time if the Geo Map would automatically be updated using the data in the location field as the device is discovered.
Update Geo Location on Map upon device discovery