At any time before the adjudication record becomes final, the adjudication officer—
(a) may correct in the record any error or omission not materially affecting the interests of any persons; and
(b) after taking such steps as he or she thinks fit, to bring to the notice of every person whose interest is affected his or her intention to make any material alteration in the record which he or she considers necessary, and after giving such person an opportunity to be heard, may make such alteration.