Question. I have a TAP ticket that I haven't flown any segments on yet. I'm trying to change the return which was booked with a LIS stopover for one day. So I'm trying to change the dates of xxx-LIS and LIS-yyy by 3 days. Whenever I attempt to change the ticket online I get a yellow warning "Invalid Original itinerary". Anybody know what that means? Should I just wait to fly the outbound and then try again?
It's a Discount bucket ticket so a $300 change fee which I'm totally fine with. But I do at least have the ability to change it per the fare rules.
Thanks,
-RM