We are a MNC dealing in petrochemicals in Mumbai. One of our customer who is a shipper has arrived at mumbai wants to buy our oil with a condition that invoice should be in USD at Mumbai and payment will also be in USD. So can we raise invoice in USD in mumbai and realise payment in USD and consider it as a deemed export? Secondly whether VAT is applicable on the same? Whether we have to inform RBI by filing a necessary forms?