Ca Exam Form

I've made the same mistake.  Nothing to worry about. Read the following (Answer to faq 29 regarding incorrect particulars in exam form):

"The PDF reflects what is filled up. We request you to be careful while filling and saving the form. If you have made the successful payment you can seek correction of the same. You can highlight the area wrongly entered/appearing in the PDF and mark the correction without disturbing any other area. Also SEPARATELY send a signed application quoting the registration number and control number intimating the correction required. Superscribe the envelope with as "Request for Correction Final-NOVEMBER, 2016" / "Request for Correction Intermediate (IPC) Exam-NOVEMBER, 2016" ) this is only for such case where centre/group are not wrongly entered hence please do not take is as general correction procedure."

Ive also confirmed the same after calling up at ICAI.