Saleswoman recalled trouble over carbon copy (7)
I believe the answer is:
replica
'copy' is the definition.
(I know that replica is a type of copy)
'saleswoman recalled trouble over carbon' is the wordplay.
'saleswoman' becomes 'rep' (rep is a type of salesperson).
'recalled' shows that the letters should be reversed in order.
'trouble' becomes 'ail' (synonyms).
'over' means one lot of letters goes inside another.
'carbon' becomes 'C' (chemical symbol).
'ail' placed around 'c' is 'acil'.
'acil' written backwards gives 'lica'.
'rep'+'lica'='REPLICA'
(Other definitions for replica that I've seen before include "Parcel I found with exact copy" , "Parcel I used to contain exact copy" , "I parcel (anag) - reproduction" , "Exact copy or model" , "Parcel I arranged as exact copy" .)