GST notification amendment updates goods entry to include fly ash bricks, aggregates and blocks, altering classification and applicability. This notification amends Notification No. 378-F.T., dated 7th March, 2019, by substituting the Table entry against serial number 4 in column (3) with 'Fly ash bricks; Fly ash aggregates; Fly ash blocks' and declares the amendment to be deemed effective from 18th July, 2022.