IGST rate amendment modifies tariff entries, altering applicable rates and commodity headings under the GST schedule by corrigendum. Corrigendum to the IGST rate notification revises Schedule entries: S.No.59, column (2) expands a single rate reference into multiple rate references changing applicable IGST rates for that entry; S.No.102, column (2) expands a commodity tariff heading reference to include an additional heading, broadening the Schedule classification for the goods concerned.