Complete your AD Code Registration online through ICEGATE. Learn how to register AD Code for seamless export documentation. All exporters and importers of goods in India are required to obtain the AD code as it is mandatory for customs clearance. A shipping bill is required for customs clearance at the port & it cannot be generated without an AD code registration. An AD code registration also offers benefits like exemptions that are directly credited to the current account. When a current account is opened by any importer or exporter who wants to do international business, the authorized bank assigns an AD code.