Sale deed and agreement of sale

you need to register ur agreement to sale deed.if you have receipt of payment from seller and you have the possession of subjectmatter of agreement to sale.if you both seller and byer fulfilled your promises respective of your agreement then you need not to excute your sale-deed.

the details are :

In my agreement to sale which has been registered, it has been mentioned that "this agreement shall be deemed and considered as sale / conveyance-deed on compliance of all the terms and conditions mentioned hereinabove"

It was also mentioned that the full and final payment should be done within 30 days from the date of registration of this agrrement to sale. However, I made the payment in 60 days.

Also, it was no where mentioned what would be the terms and conditions if I failed to make the payment within the mentioned 30 days.

So, my question is if I am having  full and final payment receipt by the seller bearing the date corresponding to the 60th day after date of registration, then I don't require to execute sale-deed or I have to execute sale-deed as I have not made the payment in the mentioned 30 days limit.?