On an appeal under Article 69 the planning appeals commission shall quash the enforcement notice, vary the terms of the notice or uphold the notice.

On such an appeal the planning appeals commission may correct anyF1 misdescription, defect or error in the enforcement notice, or vary its terms, if it is satisfied that the correction or variation can be made without injustice to the appellant or to the Department.

Where it would otherwise be a ground for determining such an appeal in favour of the appellant that a person required to be served with a copy of the enforcement notice was not served, the planning appeals commission may disregard that fact if neither the appellant nor that person has been substantially prejudiced by the failure to serve him.