3.1. The petitioner herein is an exporter of leather garments to the foreign countries. The Union of India, in order to encourage the export of the goods to the foreign countries, came forward with an incentive by refunding the amount of the duties paid by the exporters. The amount of the duties paid, would be entered into a pass book, called as "Duty Entitlement Pass Book" (for short, 'DEPB') in which, the credit of the duty paid would be entered. Since the sale of the petitioner's goods were only export oriented, and according to the petitioner, the said DEPB were not considered as "goods" under the Tamil Nadu General Sales Tax Act, 1959 (hereinafter referred to as ''the TNGST Act'') the petitioner was under the impression that they were not liable to pay any tax on the sales of DEPB Licence. That apart, they have not registered themselves under the provisions of TNGST Act and CST Act.