Seatwave is a website where everyone can purchase or sell tickets second-hand if they want to. Seatwave doesn't have any first-hand tickets to offer and therefore doesn't sell tickets as a company. Their service is to provide a safe environment for reselling tickets.
We don't give Seatwave any tickets to sell, since we sell tickets commissioned by the promoter of the event. Tickets always remain property of the promoter and Ticketmaster doesn't have any claim on them. Therefore we don't have any right to give tickets to another (Ticketmaster) company to sell.