Rectification of mistakes allows amendment of orders to correct record errors, subject to hearing and time limits. The appropriate authority may amend any order under the Chapter to rectify a mistake apparent from the record, on its own motion or when notified by an affected person; any amendment likely to prejudice a person requires giving that person a reasonable opportunity of being heard, and no amendment may be made after the expiry of six months from the end of the month in which the order was made.