I bubbled in the wrong AP number

So, i took the AP world history test today, during late testing. I think that I may have incorrectly bubbled in one of the digits of my AP number, on the MC answer sheet. But, i put a barcode on there, and all of my other identifying information is ok. What should i do?</p>

Talk to your AP Coordinator and hope that he/she hasn’t shipped the tests by the time you find him/her. If he/she’s already shipped, well, hope that CB is intelligent enough to figure out your ID.</p>