Regarding reservation

The President may, with respect to any State or Union territory, and where it is a state, after consultation with the Governor there of by public notification, specify the tribes or tribal communities or parts of or groups within tribes or tribal communities which shall, for the purposes of this constitution, is deemed to be scheduled tribes in relation to that state or Union Territory, as the case may be.

Parliament may by law include in or exclude from the list of Scheduled tribes specified in a notification issued under clause(1) any tribe or tribal community or part of or group within any tribe or tribal community, but save as aforesaid, a notification issued under the said clause shall not be varied by any subsequent notification.

Thus, the first specification of Scheduled Tribes in relation to a particular State/ Union Territory is by a notified order of the President, after consultation with the State governments concerned. These orders can be modified subsequently only through an Act of Parliament. The above Article also provides for listing of scheduled tribes State/Union Territory wise and not on an all India basis.

The criterion followed for specification of a community, as scheduled tribes are indications of primitive traits, distinctive culture, geographical isolation, shyness of contact with the community at large, and backwardness. This criterion is not spelt out in the Constitution but has become well established.

@ Raja rangola. 

You hav enot been able to explain your problem and no view can be formed.  rather open new thread.

@ Syed tanzeer

please read cast certiifcate.  dos the certificate has endorsement that "certified he is oridinary resident of this area within the meaning of section 20 of Repreentation of Peoples' Act"