Device tagged incorrectly (6)
I believe the answer is:
gadget
'device' is the definition.
(gadget is a kind of device)
'tagged incorrectly' is the wordplay.
'incorrectly' is an anagram indicator (I've seen this in other clues).
'tagged' with letters rearranged gives 'GADGET'.
(Other definitions for gadget that I've seen before include "Small ingenious device" , "Thing made or used for particular purpose" , "Ingenious little device" , "Mechanical contrivance" , "Small mechanical device or tool" .)