E-invoice schema amendment prescribes revised GST invoice fields, transport details, and supporting transaction references under the updated form. Prescribes the Uttarakhand Goods and Services Tax (Ninth Amendment) Rules, 2020, which came into force on 30 July 2020 and substitute FORM GST INV-01 with a revised e-invoice schema. The amended form sets out mandatory and optional fields for basic invoice details, supplier and recipient particulars, item-wise particulars, document totals, supporting documents, and e-way bill details, together with annexures for ship-to, dispatch-from, batch, and item attribute information.