If you've found errors in the Index II of your registered Agreement to Sale for a Pune property, such as incorrect area, project name, or survey numbers, a correction deed is necessary. Both parties involved in the sale agreement must execute this rectification deed. It needs to be registered at the Sub-Registrar's office. You do not need to hand over the original agreement to the builder; however, you may need to present it for verification during the correction deed registration process.