Inconsistency in the record, rep sounds antsy (11)
I believe the answer is:
discrepancy
'inconsistency' is the definition.
(I've seen this before)
'record rep sounds antsy' is the wordplay.
I cannot quite see how this works, but
'record' could be 'disc' (eg a CD, compact disc) and 'disc' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'in the' acts as a link.
Can you help me to learn more?
(Other definitions for discrepancy that I've seen before include "Inconsistency" , "Unexpected difference" , "Lack of similarity" , "Failure to correspond" , "Variance of facts, disagreement" .)