Amendment to Section 3A replaces earlier schedule references with the Fourth Schedule, altering the tariff-schedule citation. The Central Excise Act amendment substitutes in section 3A, Explanation 1 the prior reference to the 'First Schedule and the Second Schedule to the Central Excise Tariff Act, 1985' with a reference to the Fourth Schedule, thereby changing the tariff-schedule citation used for the application of section 3A.