Part of warehouse receipt for consumer (4)
I believe the answer is:
user
'consumer' is the definition.
(user is a kind of consumer)
'part of warehouse receipt for' is the wordplay.
'part of' indicates the answer is hidden within the clue.
'USER' can be found hidden inside 'warehouse receipt for'.
(Other definitions for user that I've seen before include "Exploiter (of others)" , "Ruse (anag.)" , "One who employs" , "One operating something" , "With 1a [NEW] he'll need different login" .)