I have a querry regarding the ARE 1. We are despatching the materials to SEZ customer with ARE 1 form without payment of duty. But due to some technical problem, inovice and corresponding ARE 1 raised with lower amount of rate. After one year we found this mistake and now want to raise a debit note against the customer. My quesstion is that whether we can raise a debit note against SEZ customer or not and whether to raise a ARE 1 on the differential amount.