Hi Aspirant,

Hope you are doing great as per the question asked by you, as if you fall under O.B.C category that is B.C-D category so you can not apply for  E.W.S category certificate as you fall under O.B.C category as you won't be eligible to claim the quota benefits of E.W.S. E.W.S was bought as a reservation quota for general category not for other castes.

Hope you found this answer useful. Stay motivated stay positive.

All the best!