Artikel 12

The documents known as „Consular invoices” will not be required, unless their production is necessary either to establish the origin of the goods imported in cases where the origin may affect the conditions under which the goods are admitted, or to ascertain the value of the latter in the case of an ad valorem tariff, for the application of which the commercial invoice would not suffice.
The form of Consular invoices shall be simplified so as to obviate any intricacies or difficulties and to facilitate the drawing up of these documents by the branch of trade concerned.
The cost of a visa for Consular invoices shall be a fixed charge, which should be as low as possible; the number of copies of any single invoice required shall not exceed three.