Commencement of amendments to specified GST notification deferred until date notified in the Official Gazette under statutory authority. Specification that amendments to serial numbers 5 and 6 of an earlier GST notification shall come into force on such date as notified by the Government in the Official Gazette, the timing being fixed under the statutory powers vested in the Punjab Goods and Services Tax regime and exercised by the Additional Chief Secretary-cum-Financial Commissioner (Taxation).