Point out it's a kind of kidney bean (5)
I believe the answer is:
pinto
'a kind of kidney bean' is the definition.
(I've seen this in another clue)
'point out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'point' is an anagram of 'PINTO'.
'it's' is the link.
(Other definitions for pinto that I've seen before include "Spotted or piebald horse" , "A piebald pony" , "Mount" , "Piebald horse (US)" , "H [HORSE]" .)