The GPA was executed which included several rights including sale of property in HOSUR Tamil Nadu. The property was inherited from grandfather who passed away without any will. He had only one child and 4 grand daughters. One of the grand-daughters has not signed the GPA. Furthermore, this GPA was used to execute the sale deed without the consent of the people who had signed the GPA (3 grand daughters and daughter). Now that one of the Grand-Daughters has not signed the GPA, is the GPA valid? also, is the sale deed that was executed using this GPA valid?