The State Bank of India Act,1955
Section 47. Defects in appointment or constitution not to invalidate acts or proceedings
(1) No act or proceeding of the Central board or of a Local Board or a Local Committee shall be questioned on the ground merely of the existence of any vacancy or defect in the constitution of the Board or Committee, as the case may be.
(2) All acts done by any person acting in good faith as a director or as a member of a Local Board or of a Local Committee shall, notwithstanding that there was some defect in his appointment or qualifications, be as valid as if he was a director of the Central Board or a member of the Local Board or the Local Committee, as the case may be.