Extension of deadline: proviso date in state GST notification extended and made retroactively effective by amendment. Power under section 128 of the Meghalaya Goods and Services Tax Act, 2017 is used to amend Notification No. 7/2023 State Tax by substituting the proviso date from the thirtieth day of June to a later day in August, and the amendment is deemed to have come into force with effect from the thirtieth day of June, 2023.