Agri land registration through court

What was the requirement of sending second notice if the vendor has not come forward for getting the documents executed ?

Your lawyer should have filed a suit for specific performance. 

Seek guidance of the lawyer engaged / paid by you who is well aware about facts of the case, an able, competent and intelligent enough to advise and proceed without waiting for an obligation (FREE OF COST) of experts on this platform based on limited facts posted by you, which are bound to differ from reality.

yes i do endorse the suggestion pointed by the learned friend Sri Vashist ji