Nothing wrong getting obscure leather (6)
I believe the answer is:
oxhide
'leather' is the definition.
(type of leather)
'nothing wrong getting obscure' is the wordplay.
'nothing' becomes 'O' (looks like zero - 0).
'wrong' becomes 'x' (X is used to mark something as incorrect).
'getting' says to put letters next to each other.
'obscure' becomes 'hide' (synonyms).
'o'+'x'+'hide'='OXHIDE'
(Other definitions for oxhide that I've seen before include "Type of leather" , "It's very tough" , "neat cover" , "Neat wrapper" .)