A decision of the
Tribunal is not invalid only because —
(a)
there was a defect or irregularity in, or in connection with, a person’s
appointment to an office or to act in an office;
(b) a
person holding office as Deputy President acted in the office of President
when the person was not the senior person holding office as Deputy President;
(c) a
person acted in the office of President or an office of Deputy President when
the occasion for the person to act in the office had not arisen or had ceased;
(d) a
person represents another person in a matter that is before the Tribunal
contrary to section 120; or
(e) a
person acted or performed a function contrary to section 11(7) or
144(3).