Hii there,

Dear candidate, hope you are doing well, the format for category or caste certificate for counselling in josaa for IIT's, NIT's, GFTI's must be the centrally accepted one. However the certificates which are made are central one only and mostly in English languauge, try to arrange that one and then you can get seat in you state qouta.

https://josaa.nic.in/webinfocms/Public/View.aspx?page=73

You can get format here. Know more here

https://engineering.careers360.com/articles/josaa-counselling/amp

Good luck!