Hello,

It will be verified by the invigilator in the center. They have said you how to correct it. If it not done then it might be a problem.

As your details are all correct , there won't be any misplacement. It will be either rejected or evaluated. There is only one  way from the both.

If you have done then there is no way to solve it. If you are asking to know what will happen then better not to do it.

Hope it helps!