GST classification amended: substitution of fly ash product entries alters taxable item list under state GST provisions. Amendment revises the entry at Sl. No. 1, column (3) of the earlier notification by substituting the entry with 'Fly ash bricks; Fly ash aggregates; Fly ash blocks' under powers conferred by sub section (1) of section 11 and sub section (1) of section 16 of the Nagaland Goods and Services Tax Act, 2017; the amendment comes into force on 18th July 2022.