(1) The party shall not be entitled to produce additional evidence whether oral or documentary before the Tribunal, but if – a) the Authority from whose order the appeal is preferred has refused to admit evidence, which ought to have been admitted; or b) b) the party seeking to adduce additional evidence satisfied the Tribunal that such evidence notwithstanding the exercise of due diligence was not within his knowledge or could not be produced by him at or before the time when the order under appeal was passed; or c) the Tribunal requires any document to be produced or any witness to be examined to enable it to pass orders or for any other substantial cause.
The Tribunal may allow such evidence or document to be produced or witness examined:
Provided that the responded and the State Representative shall, in such cases, be entitled to produce rebutting evidence ,if any.