Commencement of Tamil Nadu GST Amendment: most provisions activated while specified sections remain excluded pending separate commencement. Appointment of the commencement date for the Tamil Nadu Goods and Services Tax (Amendment) Act, 2019 designates the 1st day of February, 2019 as the operative date for the Act's enactment, excepting clause (2) of Section 8, Section 17, Section 18 and clause (1) of Section 20 so that those provisions do not come into force on that date; the appointment is made under the power conferred by sub section (2) of Section 1 and issued by the Principal Secretary to Government as an official notification.