The system thinks someone has. It has harder now for scammers to do this - because the need you Drivers license - but they may have figured away around it.
If they IRS system has another return already filed, you will not be able to file electronically - and that sucks
best bet is to file on paper.... sometime in the future, you will get a letter saying there is an issue. You will have to deal with the IRS at that time.
good luck
