We went to the interview with a missing police document. At the interview they told us to post in when we recieve it. Once we sent in (after two months) they post us our passportd with VISA!!!
I'm not sure about Bith and education certificates as they are primary requirements. But my guess would be , It would be alright to go ahead with th e interview, and tell them that you would submit them later.
Where are you facing the interview? Better check if yuo can find similar experience at the same consulate, as I understand the way they handle things are different, and highly depend on the place. I faced the interview in JAPAN(third country interview, as I7m not a citizen there)