Inspection 1.6 TDI

Good day, the Arona was at 15tkm for inspection with oil change. Now at 30tkm about 10months after the last inspection he wants to inspect again but without oil change. I thought the Longlife refers only to the oil but to the whole inspection? What is done there at all and how expensive can such a thing be? The vehicle has a warranty extension, must I stay there with Seat so that it remains? Many thanks for your answer ciarastella