Nayan, t is not clear if you are enquiring about NEET 2020 or NEET 2021. if you are enquiring about NEET 2020, then you must already uploaded marks sheet and even if it was a scanned copy of the Xerox marks sheet and if NTA did not request for a re upload, then you are fine. But if you are enquiring about NEET 2021, you will have to upload a scanned copy of the Original marks sheet. Or else, NTA might ask you to re upload your marks sheet. The rule is that you upload your scanned copy of the original marks sheet. Colleges usually give marks sheets with an undertaking. So you may have to reach out to the administration.