Unless otherwise agreed, the remuneration shall, however, not be paid until after the subject matter of delivery has been received in accordance with the contract and following receipt by BMW of a proper and auditable invoice stating BMW's requisition number (Bedarfsmeldungnummer (BM)), purchase order number (Bestellnummer) and supplier number (Lieferantennummer). For calculating when a payment is due, deliveries made before the agreed delivery date shall not be deemed to have been received until the agreed delivery date.