Amendment to GST notification: substitution of fly ash product descriptions alters classification under state GST. Under the proviso to sub-section (1) of section 10 of the Telangana GST Act, the State Government, on the Council's recommendation, substitutes the entry in column (3) against serial number 4 in the referenced notification with 'Fly ash bricks; Fly ash aggregates; Fly ash blocks', effecting a reclassification in the notification table; the amendment is published in the Extraordinary Gazette and takes effect from the stated commencement date.