Section 164 notification activates specified HGST Eighth Amendment Rules into force effective start of January. Notification under Section 164 appoints 1 January 2022 as the date on which rule 2, rule 3, clause (i) of rule 6 and rule 7 of the Haryana Goods and Services Tax (Eighth Amendment) Rules, 2021 shall come into force, thereby fixing the effective date for implementation of those amendment provisions.