(1) The appellate authority referred to in section 99, may, on the application of any party, review its own order in any case and pass in reference thereto such orders as it thinks fit:
     Provided that no such application shall be entertained unless the appellate authority is satisfied that there has been a discovery of new and important matter or evidence which after exercise of due diligence was not within the knowledge of the applicant or could not be produced by him at the time when the order was made or that there has been some mistake or error apparent on the face of the record or for any other sufficient reason:
     Provided further that no such order shall be made under this sub-section unless notice has been given to all interested parties and they have been afforded a reasonable opportunity of being heard.
     (2) An application for review under sub-section (1) by any party shall be made within thirty days from the date of communication of the order of the appellate authority sought to be reviewed.