The Amendment provided for subsuming of various central indirect taxes and levies such as (i) Central Excise Duty, (ii) Additional Excise Duties, (iii) Excise Duty levied under the Medicinal and Toilet Preparations (Excise Duties) Act, 1955, (iv) Service Tax, (v) Additional Customs Duty commonly known as Countervailing Duty, (vi) Special Additional Duty of Customs, and (vii) Central Surcharges and Cesses so far as they related to the supply of goods and services.