The URL is for UA Japan site in ENGLISH.
http://www.unitedairlines.co.jp/jsp/...p_star_sas.jsp

I know every program has their own FFP scheme. But as far as I know, you cannot earn any miles/points this particular route (ARN-GOT) in ANA Milege Club, LH Miles and More, SK EuroBonus, and UA Mileage Plus(?).

I cannot find anything about this issue in united.com.