Error in filling the exam form

You meant saying it happened inadvertently. You can check your exemption status on the below link:

https://exemptions.icaiexam.icai.org/

Now, that an error has occured from your end, call up the examinatiion department and let them know as to what action is needed. 

Helpline Telephone Numbers: 0120-3054 851, 3054 852 , 3054 853, 3054 835, 4953751, 4953752, 4953753, 4953754.
Fax Number: 0120-3054 841, 3054 843
E-mail address: final_examhelpline @ icai.in