'update_inventory' Command
This command affects only the specified technician's inventory. The main difference from the 'set_inventory' command is that no inventories are deleted. It works as follows:
1) If no inventory with specified key field values exists in the system for the technician specified:
new inventory is inserted
fields and properties are set for it, as specified in the request.
2) If inventory with specified key field values exists in the system for the technician specified:
fields and properties specified in the request are updated
fields not specified in the command are deleted.