If you discover external damage to the parcel when the spare part shipment is delivered, then refuse acceptance or show the damage to the postman/delivery agent. If, whilst unpacking the goods, you discover material defects or you have ordered the wrong spare part, then please inform us as soon as possible (within 15 days at the latest). Please also check our delivery conditions on this point. Before you return the goods, you must request a returns note from us, quoting the delivery note number.