What documents will serve as the relevant proofs in case of applicants being entities incorporated outside India/Unincorporated entities formed outside India?
Copy of following will serve as relevant proof in case of applicant being entities incorporated outside India/Unincorporated entities formed outside India :

Copy of Certificate of Registration issued in the country where the applicant is located, duly attested by "Apostille" (in respect of the countries which are signatories to the Hague Apostille Convention of 1961) or by the Indian Embassy or High Commission or Consulate in the country where the applicant is located or authorised officials of overseas branches of Scheduled Banks registered in India
Copy of registration certificate issued in India or of approval granted to set up office in India by Indian Authorities.