Perhaps a moderator could transfer this to the United forum, if it would be more appropriate there? Thanks!

I tried with three different agents and they all received the same error message. I escalated to a supervisor and he said the routing was invalid. At this point they have notes on all my calls and any attempt is met with "You already tried that and were told no."

One theory I have seen is that perhaps my itinerary is too long. The total mileage for this itinerary is 21,117. The supervisor said the only way to do my routing would be to convert to a RTW ticket. Perhaps this is the issue? Unfortunately, the supervisor had poor english and couldn't really convey the issue and I think a lot of my explanation's nuances were lost on him.