This discussion clarifies that notarising a Partnership Deed is not legally mandatory in India, though registration with the Registrar of Firms is advisable for legal advantages. If a deed is notarised but the notarisation itself cannot be proven, the deed may still be valid if otherwise in order, as the notary's mistake doesn't automatically invalidate the agreement. However, issues like antedating a notarised deed, especially if intended to mislead or avoid liability, could lead to complications and potential criminal action.