Qualification (6)
'qualification' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for caveat that I've seen before include "A caution, proviso" , "Warning (of conditions)" , "Cautionary warning" , "A notice or warning" , "Formal warning" .)
'qualification' is the definition.
(I know that A Level is a type of qualification)
This is all the clue.
(Other definitions for a level that I've seen before include "'British school examination (1,5)'" , "Top tier in UK schools" , "You'd have to take papers for this" , "Stage beyond GCSE" , "Sixth-form exam" .)