what else do I need to submit to prove myself OBC NCL to jossaa along with obc ncl certificate.
JEE Main 2025: Rank Predictor | College Predictor | Marks vs Rank vs Percentile
JEE Main 2025: Sample Papers | Syllabus | Mock Tests | PYQs | High Scoring Topics
Apply to TOP B.Tech/BE Entrance exams: VITEEE | MET | AEEE | BITSAT
http://www.jeeadv.nic.in
....it's mandatory......and it will take time to make that certificate

https://www.jeeadv.ac.in/certificate-formats
It contains everything.
I am sharing the documents needed for JoSAA Counselling 2017 through the link given below.
JoSAA Counselling 2017
Related Questions
Know More about
Joint Entrance Examination (Main)
Eligibility | Application | Preparation Tips | Question Paper | Admit Card | Answer Key | Result | Accepting Colleges
Get Updates BrochureYour Joint Entrance Examination (Main) brochure has been successfully mailed to your registered email id “”.
Joint Entrance Exam Advanced
Eligibility | Application | Exam Pattern | Admit Card | Preparation Tips | Answer Key | Result | Accepting Colleges
Get Updates BrochureYour Joint Entrance Exam Advanced brochure has been successfully mailed to your registered email id “”.