Letter of approval cancellation: loss of statutory exemptions and prescribed remittance obligations follow non compliance. The Approval Committee may cancel a letter of approval if the entrepreneur persistently contravenes its terms, after affording a reasonable opportunity of being heard; cancellation terminates entitlement to statutory exemptions and the entrepreneur must remit, as prescribed, benefits availed relating to capital goods, finished goods in stock and unutilised raw materials. An aggrieved person may appeal to the Board within the prescribed time, with late admission only for sufficient cause; appeals require prescribed form, copy of the order and fees, and disposal follows prescribed procedure with a reasonable opportunity of hearing.