Hi,

for most practical purposes, the validity of an OBC NCL Certificate is treated as 1 year. If your OBC NCL certificate was obtained before 1 year, it is always better to get a new OBC NCL before applying for exams.

Successful submission of application and documents, you will get the Caste Certificate within 30 days of issuing date by the concerned authority.

OBC certificate has to be renewed each year. You can renew the certificate by applying for it at the district office of one's city or district.

Hope this helps

Wish you luck