Originally Posted by
ajGoes
Thanks. I find United's SDC rule ambiguous. It says "The itinerary must be operated by United or United Express®…." This doesn't say which itinerary: the original, or the one I want to SDC to. I imagine those who have reported success changing from codeshares to United-operated flights have found agents who read it as the latter.
It means both flights, the one you are currently booked on AND the one you want to change to. Changing on a code share is covered in the wiki.