This process has had a history of problems. It works fine for months and then it will break from time to time. Do to the nature of this -- Electronic request from UA, passes thru *A and then passed to operating carrier. There are multiple places it can break and none of the front line employees from UA or the operating carrier can do anything. The entry form is very touchy -- the smallest inconsistency will cause it to throw errors. Look very carefully at your name structure on the LH side.