Mistake in circling the bar code number

guys.. today while starting my SFM paper, i by mistake circled the wrong 1 digit of my roll number  which i immediately cancelled and rectified by darkening the correct digit below it. Does it create a problem ?? rest all the places i.e roll number in words, the sticker and the numerical box contains the right roll number. but just circled 1 digit wrong and cancelled it immediately .. consequences  plz???and solutions if any ...