FWIW...OZ did not have my correct ticket number on an award flight...UA agent had to call them to correct it. This was after I had seats selected on OZ which I assumed meant that they had the proper ticketing, etc. I'm not sure, since OZ apparently blocks online seat maps after a certain capacity is reached, how else to make sure that a UA ticket is properly set up on OZ. Anybody have any other ways to verify everything is OK?