146A.—(1) Subject to subsection (2)—

(a) a planning authority or the Board, as may be appropriate, may amend a planning permission granted by it, or

(b) the Board may amend any decision made by it in performance of a function under or transferred by this Act or under any other enactment,

for the purposes of—

(i) correcting any clerical error therein,

(ii) facilitating the doing of any thing pursuant to the permission or decision where the doing of that thing may reasonably be regarded as having been contemplated by a particular provision of the permission or decision or the terms of the permission or decision taken as a whole but which was not expressly provided for in the permission or decision, or

(iii) otherwise facilitating the operation of the permission or decision.

(2) A planning authority or the Board shall not exercise the powers under subsection (1) if to do so would, in its opinion, result in a material alteration of the terms of the development, the subject of the permission or decision concerned.

(3) A planning authority or the Board, before it decides whether to exercise the powers under subsection (1) in a particular case, may invite submissions in relation to the matter to be made to it by any person who made submissions or observations to the planning authority or the Board in relation to the permission or other matter concerned, and shall have regard to any submissions made to it on foot of that invitation.

(4) In this section "term" includes a condition.]