Also, the authorities are given advance notification of each individual shipment at least three working days before shipment takes place, and certificates of receiving and of treating the waste are required. An original movement document (Annex IB) and copies of the written permits from the competent authorities should accompany a shipment subject to the notification procedure. It is required only that information in accordance with Annex VII of the WSR accompanies the waste and that the person arranging the shipment and the consignee have a valid contract under Article 18 of the WSR before shipment begins. Individual Member States may require the information specified in Annex VII for inspection, enforcement, planning, and statistical purposes, according to Article 18.