OBC certificate all india conselling me use karne ke liye sign DM ka hona chhahyeya SDM ka
Hey,
The OBC certificate signed by SDM Or DM both is valid in the All India Neet Counseling. I don't think there will be any problem if you have your category certificate signed by any one of them.
For more clarification you also mail them about your enquiry.
Hope that helps.
Thank you.