Originally Posted by
pandaperth
I investigated your problem using the tool (a simple KRK-JNB-SYD-LAX-LHR-KRK itinerary). Got the same error message, which appears on the second screen - where you can choose your flights.
This is actually a combination of two known bugs (well known to me, not sure if they've been reported in the
xONEx online tool bugs thread - FlyerTalk Forums)
- The tool for some reason cannot see availability which is there (according to other tools such as ExpertFlyer)
- The tool sometimes suggests illegal routings
In your case
- The tool cannot see any trans-pacific availability (Australia to Nth America), so
- It suggests only flights via London (SYD-LHR-LAX); since you are flying an Eastbound RTW (because of your JNB-SYD flight), to switch to Westbound (the suggested SYD-LHR-LAX flights) is not allowed
ETA
Just noticed your handle
scottishpoet. When in Melbourne you must visit my favourite pub
The Drunken Poet 
Thanks for the info. Not sure why the tool wants me to fo SYD-LHR-LAX, that seems the long way round. it had no problem booking me on a direct SYD-LAX 3 years ago when I was krk-doh-syd-lax-ord-lhr. is there a workaround? Do I need to call someone, or put in an extra stop in Tokyo for example? I am trying to avoid that as that seems to be the part of the world where most covid restrictions are still in place