Article 4
Customer declaration 1. Without prejudice to Articles 6 and 14, any operator established within the Community who supplies a customer with a scheduled substance of categories 1 or 2 of Annex I shall obtain a declaration from the customer which shows the specific use or uses of the scheduled substances. A separate declaration shall be required for each scheduled substance. This declaration shall conform to the model set out in point 1 of Annex III. In the case of legal persons, the declaration shall be made on headed notepaper. 2. As an alternative to the above declaration for an individual transaction, an operator who regularly supplies a customer with a scheduled substance of category 2 of Annex I may accept a single declaration in respect of a number of transactions involving this scheduled substance over a period not exceeding one year, provided that the operator is satisfied that the following criteria have been met: (a) the customer has been supplied by the operator with the substance on at least three occasions in the preceding 12 months; (b) the operator has no reason to suppose that the substance will be used for illicit purposes; (c) the quantities ordered are consistent with the usual consumption for that customer. This declaration shall conform to the model set out in point 2 of Annex III. In the case of legal persons, the declaration shall be made on headed notepaper. 3. An operator supplying scheduled substances of category 1 of Annex I shall stamp and date a copy of the declaration, certifying it to be a true copy of the original. Such copy must always accompany category 1 substances being moved within the Community and must be presented on request to the authorities responsible for checking vehicle contents during transport operations.