Originally Posted by
asiapacflyer
..Agree, always call the operating airline (code shares tickets, reward tickets, etc.) and get that airlines record locator number and e-ticket receipt if possible. Have flown on so many codeshares flights that I now prefer to be ticketed on the operating carrier's flight. One gets bounced around when trying to make changes (the code share carrier asks you to call the operating carrier and the operating carrier asks you to call the code share carrier...repeat).
While the record locator is carrier dependent, the ticket number is not.
They must find the ticket number in their records. Or on flights to or from the EU, they must find it by your name, even if you have no etix number or PNR on you.