Problem with uniform is limited identity (10)
I believe the answer is:
similitude
'identity' is the definition.
(thesaurus)
'problem with uniform is limited' is the wordplay.
'problem with' is an anagram indicator.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'u'+'is'+'limited'='uislimited'
'uislimited' is an anagram of 'SIMILITUDE'.
(Other definitions for similitude that I've seen before include "Correspondence" , "Nearly identical quality" .)