Hello aspirant,

I hope you're doing well as for your query:

- Judging by your situation, ask for a migration certificate. Where appeared for 11th grade.

- The registration certificate will be provided by the college where you pursued your 12th grade.

- If you don't get anything there, try reaching the regional CBSE office, they will assist you in the best way.

I hope it helps

Have a nice day & wish you happy Diwali.