GST tariff amendment substitutes specified tariff headings for two entries, altering schedule classification effective from January first. Substitutes specified entries in Notification No. 21/2018-Central Tax (Rate): replaces the TABLE entry at S. No. 4 with '4414' and the TABLE entry at S. No. 29 with '7419 80'; amendments made under the Central Goods and Services Tax Act on the Council's recommendation and effective from 1 January 2022.