Is it necessary to get the NDAs attested by Notary Public?

Hello,

My company is developing a real estate project and we are signing NDAs with many vendors and potential clients.

I wanted to ask if it is necessary to get the NDAs attested by Notary Public.

In case there is a conflict and the case goes to court, can we present the NDA (which is not attested) to the court?

Please advise on the same.

Many thanks in advance!