same problem here I have visited NIT Srinagar today for confirmation.

Hi,

Hope you are doing great. Yes, JOSAA will accept RBA as RBA falls under OBC category. Therefore, RBA and OBC are the same categories. RBA is the resident of backward area.

For more information related to the categories under OBC, you can go through the link given below- https://pib.gov.in/newsite/PrintRelease.aspx?relid=124804

Hope this helps