A FlyerTalk Posting Legend
Join Date: Jul 2002
Location: MCI
Programs: AA Gold 1MM, AS MVP, UA Silver, WN A-List, Marriott LT Titanium, HH Diamond
Posts: 53,006
If the system is allowing you to cancel your reservation, then in practice you can do it. Changing/canceling one award reservation isn't going to get your account locked.