Inner Line Permit (ILP) is an official travel document issued by the concerned state government to allow inward travel of an Indian citizen into a protected area for a limited period.. About the Sixth Schedule:

It protects tribal populations and provides autonomy to the communities through creation of autonomous development councils that can frame laws on land, public health, agriculture and others. As of now, 10 autonomous councils exist in Assam, Meghalaya, Tripura and Mizoram. Do follow my telegram channel - https://t.me/aspirantvoice