No, in most cases, you cannot submit your Non-Creamy Layer (NCL) certificate at the time of counselling  if you did not mention it during registration,you need to claim for reservation before the exam while filing application form.

Always refer to the official admission brochure or website to see if the institution allows for submitting category certificates during counselling even if not mentioned earlier.

Remember next time to fill OBC while applying

After claiming obc ncl If you fail to submit the NCL certificate during registration, you may be considered under the general category initially, potentially affecting your eligibility for reservation benefits.

Be prepared to present your original NCL certificate during document verification at the time of counselling.

GOOD LUCK!!!