Interface OrderMessage

interface OrderMessage {
    type: "ORDERS";
    orderNumber: string;
    orderDate: Date;
    deliveryDate?: Date;
    buyer: Party;
    seller: Party;
    deliveryAddress?: Address;
    currency: string;
    paymentTerms?: string;
    lines: OrderLine[];
    totals: { totalLines: number; totalQuantity: number; totalAmount: number };
}