In Construction activity we have book the Flat after 1st April 2016 & Received Amt of Rs. 50 Lakh & Service Tax we have paid @15% of Rs. 2,25,000/- After some time Flat is cancelled and we have make Monthly payment to the customer as Part Payment of Rs. 25 Lakh......can we gate full Revers Cenvat Credit or Partyl Reverse Cenvat Credit????