Hello aspirant,

Please do not worry about this mistake. The invigilator and the examiner will understand that there is a mistake in the Paper code and it will not create any issue, nor will your answer sheet will be rejected. So, please do not worry about it. It is a common mistake, to input sometimes the wrong paper code from students, and the examiner understands it as well. So, do not panic as it is totally fine and it will be corrected and your paper will not be rejected.

I hope that this will help.

Best of Luck.