hello aspirant,

see its mandatory to have correctly write your name in omr box and bubbles, however sometimes candidature may be rejected due to provide wrong information. you need to immediately report the problem to the invigilator of the exam hall. after the completion of exam and submitting the omr sheet nothing can be done. you have not mention which exam you are talking about. you may send a mail to the exam authority describing your problem and also do mention your roll number and registration number.