Hi Ben,
Thanks for your response. Yes, it was an intermittent issue but happened few times for different users.
My understanding is that, as this happens after selecting the region in Sage page, it's already out of our application into Sage serving pages hence do not see anything in our logs. We're building the end user app which is a javascript application but we're using an intermediate service for integration with Sage which I'm not sure of the language. I can get those details if required.
Regards,
Sethu