A property owner is facing issues with a rectification deed due to a survey number error from a sale 10 years ago. Some original sellers are deceased and their legal heirs are untraceable, leading the sub-registrar to refuse rectification. The advice suggests that original sellers or their legal heirs must execute the deed. If heirs are untraceable, a declaration suit in civil court is recommended to establish the correct survey number. Consulting a local lawyer for professional guidance is also advised.