How to show cenvat credit reversal in st3

Friends/Experts

During service tax audit conducted by the Audit Team from the Dept. some cenvat credit availed but not utilised have been disallowed and we have to reverse the same.

My query is how to show this reversal in the ST3 which I shall be submitting for the half year ending 30/09/2012.

Is there any scope in the ST3 return.

Regards,