Hello Aspirant,

If you are going to use you new first copy of marksheet of your 10+2 in NEET UG counselling then you need to use it along with an affidavit which declares that your original marksheet has lost and therefore the respective board has issued you the new first copy of your original marksheet and you have to produce the marksheet along with an affidavit at the time of document verification in NEET UG counselling.

I hope this information helps you.

Good Luck!!