Documents required at the time of form submission are

Date of Birth Certificate issued by appropriate authorities.
Immunization certificate of B.C.G, M.M.R, D.P.T and Polio.
4 Passport sized photographs of child. (2 Passport & 2 Ticket size)
2 Passport size photograph of parents.
Residential proof, photocopy of PAN card/ Voter ID/ Aadhar card.