1.Supply contracts shall be concluded between individual producers, producer groups or producer organisations on the one hand and approved operators as referred to in Article 42 on the other hand.
Contracts shall include in particular:
(a)the business names of the parties to the contract;
(b)a precise description of the products covered;
(c)the total quantity to be supplied and the forecast delivery schedule;
(d)the references and areas of the parcels on which the products are grown and the names and addresses of each grower concerned;
(e)the duration of the undertaking;
(f)the packaging and presentation method and information relating to transport (conditions and costs);
(g)the exact delivery stage.
2.Contractors may increase the quantity initially specified in the contract by no more than 30 %, by means of an amendment in writing to the contract.
3.Contracts and amendments thereto shall be signed before the start of the deliveries concerned and before a deadline set by the competent authorities, which may differ for each product.
4.The competent authorities may adopt additional provisions concerning contracts, in particular regarding compensation in the event of failure to observe contractual obligations or to fix a minimum quantity for each contract. Where administration of the aid scheme so requires, the competent authorities may specify marketing periods or years other than those referred to in Article 53 for each product.