Commencement of GST amendment: most provisions take effect on appointed date, with specified sections excluded. The State Government appoints a specific date as the day on which the provisions of the Arunachal Pradesh Goods and Services Tax (Amendment) Ordinance, 2019 shall come into force, except for clause (b) of section 8, section 17, section 18, clause (a) of section 20, and specified sub-clauses of section 28, which are excluded from this commencement.