Yes sir, the NWAC north western accrediation marksheet is valid in india as well as in abroad .there is no doubt that the nwac mrksheet is valid in the rjpv counselling or not.

Also i would like to give an official link of career 360 article regarding the rjpv counselling as following link:

 Https://www.google.com/amp/s/engineering.careers360.com/articles/mp-be-counselling-seat-allotment/amp

Still you have any query related to this ask me in comments.

Best of luck for future!!!