If paragraph (a) or (b) of section 56(2) applies the Secretary of State or the inspector must as soon as practicable after making any correction or deciding not to make any correction issue a notice in writing (a correction notice) which—
specifies the correction of the error, or
gives notice of his decision not to correct such an error.
The Secretary of State or the inspector (as the case may be) must give the correction notice to—
the applicant;
if the applicant is not the owner of the land in respect of which the original decision was made, the owner;
the local planning authority for the area in which the land in respect of which the decision was made is situated;
if the correction was requested by any other person, that person.
The Secretary of State may by order specify any other person or description of persons to whom the correction notice must be given.