Originally Posted by
alenguy
Last week I purchased an itinerary involving a TAP segment from LHR-LIS and I've been trying to gain access to the reservation over on TAP's website to get a seat assignment, however the confirmation code/last name combo that United provides isn't working. Any suggestions for how to deal?
When in doubt, call / tweet / email the operating airline. They can give you your confirmation number and/or take care of the seat assignment on the phone.
UA has gotten better at providing accurate partner confirmation numbers, but it’s still not perfect.