Vacancy, etc., not to invalidate proceedings of Commission :
Section – 15. No act or proceeding of the Commission shall be invalid merely by reason of—
| (a) | any vacancy in, or any defect in the constitution of, the Commission; or | |
| (b) | any defect in the appointment of a person acting as a Chairperson or as a Member; or | |
| (c) | any irregularity in the procedure of the Commission not affecting the merits of the case. |