The regulations do not mandate that a fully enclosed structure is a prerequisite for grant of license. What is important is that the site or building is suitable for secure storage of goods and discharge of compliances, such as proper boundary walls, gate(s) with access control and personnel to safeguard the premises. Moreover, depending on the nature of goods used, the operations and the industry, some units may operate without fully closed structures. The Principal Commissioner/Commissioners of Customs will take into consideration the nature of premises, the facilities, equipment and personnel put in place for secure storage of goods, while considering grant of license.