Looks like the gel clear coat has clouded or hazed in places.
You could try to polish the haze out - if it is on the surface. But it could also be an early sign of delamination - but if it is stable ie. not growing or showing signs of blistering - then maybe not.
"BMC provides a voluntary warranty of three years on every frame, and two years on BMC components and paintwork (paintwork one year for bikes before 2014)."
Warranty is transferable but you will original need proof of purchase.
Carbon frames can be stripped and re-laminated by specialist carbon repair workshops - re-badged to look as good as new.