JEE Mains State Code + NIOS + JoSAA + JAC Delhi Confusion (Need Guidance)

Hi everyone, I have a serious doubt regarding my eligibility and state code. Please help.

I passed Class 12th in 2025 from UP Board with 75%+ marks.

Now in 2026, I am appearing again for Class 12th through NIOS to become eligible for Delhi Home State quota.

While filling the JEE Mains 2026 form, I selected:

• State of eligibility: Delhi
• Class 12 status: Appearing (NIOS 2026)

Now my confusion is:

1. Can I participate in JoSAA counselling using my 2025 UP Board marksheet?
2. And participate in JAC Delhi counselling using my 2026 NIOS marksheet?
3. Or should I change my state code in the JEE form during correction window?
4. Will there be any issue later if I use my old marksheet for JoSAA and the new one for JAC Delhi?

Basically, I want to participate in:

• JoSAA with my UP Board 2025 marksheet
• JAC Delhi with my NIOS 2026 marksheet

Is this allowed, or should I make changes in my JEE application form?

I would really appreciate genuine guidance. Thank you 🙏