THE BHARATIYA NAGARIK SURAKSHA SANHITA, 2023 CHAPTER I PRELIMINARY

Preamble:

 to consolidate and amend the law relating to Criminal Procedure.

The provisions of this Sanhita, other than those relating to Chapters IX, XI and XII thereof, 

shall not apply— 

(a) to the State of Nagaland; (b) to the tribal areas,

 "tribal areas" means the territories which immediately before the 21st day of January, 1972, were included in the tribal areas of Assam, as referred to in paragraph 20 of the Sixth Schedule to the Constitution, other than those within the local limits of the municipality of Shillong.

but the concerned State Government may, by notification, apply such provisions or any of them to the whole or part of the State of Nagaland or such tribal areas, as the case may be, with such supplemental, incidental or consequential modifications, as may be specified in the notification.

it means  State of Nagaland by notification apply such provisions which it thinks fit either whole or partialy.

Extra information:

The Sixth Schedule of Indian Constitution contains provisions related to the Administration of Tribal Areas in the States of Assam, Meghalaya, Tripura and Mizoram. The Sixth Schedule provides for the administration of certain tribal areas as autonomous entities. The provisions of the sixth schedule are provided under Articles 244(2) and 275(1) of the Indian Constitution.