Birth Certificate registered beyond 1 year of birth?

[Shreehari]

Immihelp,
This is the best forum!
While scanning some of the threads I found that birth certificate need to be registered with in one year of birth. My friend who is pre 1970 born (when the birth registration was not common) followed the procedure as detailed in immihelp and obtained order from magistrate and got his birth registered with local department 3 years back. Now what additional evidence he needed. Affidavits can be obtained but Non availability is not feasible even under RTI as it is existing in record now.
Can you advise?
Thanks.

[immihelp]

Read last line at https://www.immihelp.com/delayed-bir...-us-greencard/

[Shreehari]

Immihelp,
Thanks for the prompt reply.
I read it again. My friend can provide affidavits, school records and other secondary evidences. My question is:
Non availability certificate is not feasible it can be asked under RTI act but the reply may come that you have records of birth with a delayed registration.
Do you think that he needs to request non- availability certificate?
Thank you.

[immihelp]

Please read it again carefully.

Non-availability certificate is required only to register the birth late. If the birth is already registered, it is not required. You only require secondary evidence in that case.

[Shreehari]

Immihelp,
Thank you for clarifying.