Originally Posted by
RatherBeInYOW
I only ever check in online and get mobile boarding passes, and even when travelling to countries that require visas I've never had doc check prevent me from checking in. I just go to the gate preemptively and get my doc check done before I board.
This is almost certainly either SSSS or an AC IT glitch. Both of those things can prevent the online checkin from completing.
Possibly but last time I went to Australia it would check me in and wouldn't give me a boarding pass. When I tried the kiosk no go there either. The agent had to print it outand there was no SSSS or anything. They said it's because of the visa check. In my travels this only happens going to Australia. But others may have different experiences.