1. the amnesty scheme is not for completing pending registration. It is for payment of unpaid stamp duty with reduced penalty
2. you will have to catch hold of your seller for the registration
3. you and seller will have to execute a confirmation deed and attach the original sale agreement to this document
4. this entire can then be presented for registration
5. the sale agreement cannot be registered alone now [without the confirmation deed] since the max time limit for registration of a document is 8 months from date of signing