(2) It shall come into force on such date as the Central Government may, by notification in the Official Gazette, appoint, and different dates may be appointed for different provisions of this Act and any reference in any such provision to the commencement of this Act shall be construed as a reference to the commencement of that provision.
(B) in sub-clause (b), for the word "goods", at both the places where it occurs, the words "goods or services or both" shall be substituted;