Hello

I am sorry it took us so long to respond. For the nationality certificate you can show either your passport or Certificate from the District Magistrate. You need to have the following documents to get NRI reservation:

Residence certificate or a valid VISA,

Passport or Nationality certificate,

A copy of Foreign bank account passbook with entries of the last 6 months

Residential proof showing minimum continuous stay of 182 days as NRI abroad.