Originally Posted by
trakzter
Again with a SK ticket and SK codeshare on SU - the SAS ticket agent would not allow checkin at their counters and said that this should be done at SU. This was possible on previous flights
The rule of thumb for checking in has always been do it with the operating carrier, not the ticketed one. Are you absolutely sure you have been able to check in with SAS on an SU flight (albeit with the SK codeshare) before? This sounds really weird.