(1) The Tribunal may correct a decision it gives or a statement of the reasons it has given for its decision to the extent necessary to rectify—
(a) a clerical mistake; or
(b) an error arising from an accidental slip or omission; or
(c) a material miscalculation of figures or a material mistake in the description of any person, thing or matter referred to in the decision; or
(d) a defect of form.
(2) The correction may be made—
(a) on a party's application made in accordance with the rules; or
(b) on the Tribunal's own initiative.