<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by ak:
In my (limited) experience, bookings for open AA segments need to be made by calling the AA RTW desk. For instance, when I called the EXP desk to book an open AA segment, I was referred to the RTW desk. Is this also true for other OW carriers?
</font>
The trouble is some airlines' non-rtw-desk agents don't know the OWE rules, so don't know how to figure out if your request is valid. You could for instance be asking for a flight time change that creates an illegal stopover, etc.
Other airlines cope with it quite well, perhaps because I'm calling a small foreign office where there aren't many staff and they're all highly trained.
I've also had "helpful" ordinary res mess up an owe itin. The rtw desk folks are often pretty good (to GREAT, esp at DFW) so having an excuse to talk with them can be to your advantage.