It's SK, multi-city. (Seems to be a known problem with SAS website for few years, not able to book multi-city flights online)
GO LIGHT - TXXXGHT
-vs-
GO SMART - TXXXEUM
So far all OTA I tried only gives GO LIGHT fare. The only light I saw was with FN showing the correct price for GO SMART, but after payment, still booked as GO LIGHT (but with GO SMART fare!) And confirmed on SAS website showing 0 check-in bag..