TDS and Sale Deed value on assignment property from builder

Hello, I am situation where I am buying an apartment from Party A who booked an apartment with builder B. The property was never registered and the flat is now ready for possession. Party has some dues pending with builder (deposits, fees and registration cost) which I will be paying directly to Builder (but recorded as part of the Sales BiParty Agreeement with Seller). To explain the situation with an example, Party A booked the apartment for 1 CR out which about 20L is fees + deposits (which I think builder has included GST). I am paying this 20L which is pending on behalf of Party A directly to Builder. Total amount on Sales agreement is 1.1 CR. Out of this 20L i pay to builder on A's behalf and remaining to A. Ideally I should be deducting on whole amount to A but Builder will only put original value of 80L in sales deed while registering property to me. I am confused how to go about this. If I pay TDS on 1.1CR and sales deed says 80L will this not be a problem? Builder says 80L is value of property and remaining amount is fees+deposits which does not fall in value of property. I want to pay TDS for A on whole 1.1, but am unsure if that will cause problem when we cite it on sales deed. Please advice.