Export of prohibited goods under advance authorization requires proof of manufacture from imported inputs and strict compliance. Export of otherwise prohibited items under Advance Authorization is allowed only where the resultant product is manufactured from inputs imported under that authorization; the exporter must submit an undertaking listing imports and exports so the customs officer can record satisfaction in the EDI field that the goods exported are not the prohibited items. Stringent operational conditions apply including pre import linkage, notified SION/norms, designated EDI ports, a fixed short export obligation period with no extensions, actual user restrictions, and mandatory re export of defective inputs.