1. The under Construction property location In Palghar
2. The property was booked both units ( Flat & Shop ) on Feb 2013. 
3. The agreement was executed according to with the Maharashtra Ownership of Flats Act ("MOFA") on July 2015.
4. In the July 2015  executed agreements, but the Promoter omitted the date of possession.
5. The Promoter failed to provide possession of the Said Flat and Said Shop within the time frame specified.
6. A society has not been established or Registered till Now.
7. No Home Loan outstanding.
8. Now Due To Delayed Possession: The first owner (seller) wishes to withdraw from the project and cancel the registrations.
9. According the project's promoter, due to a lack of financing Builder requests that the seller resell both units under Tripartite Agreements and refund the money.
10. Instead of surrendering property units, the builder is requesting that Tripartite Agreements be used to offer resale units.
11. The builder will find a new buyer/investor and complete the process.
12. The new buyer will first deposit 100% of the purchase price into the seller's account.
13. The flat will be registered/transferred to the new buyer Tripartite Agreements once the entire purchase payment is deposited into the seller's account

I need help for A tri-party agreement in India has various terms and conditions that must be adhered to before finalizing the sale. What Precaution should take .