If your PCM marks are...

Do you need a Domicile Certificate?

Above 45%

No. You can apply for General Merit. You will compete for the same seats, and no domicile is needed.

Between 40% and 45%

Yes. You must prove your Karnataka OBC status to be eligible for the exam/rank, which requires both the OBC and Domicile certificates.

Claiming KKR (371J) Quota

Yes. If you are from the Hyderabad-Karnataka region, you need both the KKR certificate and Domicile.