GSTN has issued a new advisory outlining important changes to the e-Invoice and e-Way Bill API systems, effective from August 1, 2026. The most significant change: when Ship-to information is present in a B2B invoice, the Ship-to GSTIN becomes mandatory. This affects businesses involved in bill-to ship-to transactions where goods are delivered to a location different from the billing address. What is a Bill-to Ship-to Transaction? In a bill-to ship-to arrangement, Company A b