(3) It shall come into force on such date as the Central Government may, by notification in the Official Gazette, appoint:
Provided that 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 coming into force of that provision.
 This Section was made effective by Notification No. 01/2017-Central Tax dt. 19-06-2017 wef 22-06-2017.