Rectification Deed

Some detail is missing in your query, how can the document be registered at the registration office without any express instruction by way of power of attorney by the builder to the advocate.

is advocate is appointed as Power Agent?

I don't have that much details for that i need o sepak with my father, it was done by my dad but if builder is not present for the registration does it really matter. 

When you purchase any property you enter into an agreement for sale/sale deed and go to the office of registrar or sub-registrar for getting it registered, at the time of registration of sale deed presence of both the seller and purchaser  and also two witness is essential factor but their are circumstances where presence of either the seller or purchaser becomes difficult and in that case either of them can by way of power of attorney can appoint his/her attorney for the very purposes which is a legal aspect and whose non-compliance shall nulifiy the whole transaction.

Thanks but in any case if the seller was not present at the registar office that time then what to do.

With the help of Rectification Deed, Can we resolve this or Is there any other way from that we can make the correction in the agreement..