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The "location" device attribute is the name of an entry in NMIS's "Locations" table.  You use the Locations table to create a set of location information which NMIS and OMK apps then use for geographic data such as GeoCodable locations for Geographic maps.  You associated associate a device to one of the locations in the table, this can be done through the gui by editing the devices "Location" entry which is a drop down of the available locations in the Locations table.  It is also possible to import devices with their location by providing a "location" attribute in the import csv or directly in the Nodes.nmis file.

Using location vs sysLocation

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