A single entry in the “bacnet” license feature determines whether a station can provide BACnet server functions. If enabled for server operation, this entry is:

Any JACE ordered with the “Enterprise Connectivity Pack,” required for Niagara communications to other JACEs and/or a Supervisor, should also have this entry enabling BACnet server operation.

If instead the export value is "false", no components, files, or histories are exported to BACnet, apart from the single BACnet Device Object that represents the station (as configured by the Bacnet  Local Device). Although you can still use the various views of the Local Device’s Export Table to add Bacnet export descriptors (and file and history descriptors), all descriptors will have a “fault status,” with a fault cause of “Server capability not licensed.”

For more details on BACnet server functions, see Niagara Bacnet Server Operation.