Article 4 direction

There is a problem

reference: 18
name: Rocks Bar Farm, Upper Hulme
description: The carrying out on agricultural land comprised in an agricultural unit of 5 hectares or more in area, any works for the erection, extension or alteration of a building or any excavation or engineering operations which are reasonably necessary for the purposes of agriculture within that unit being development comprised within Class A of Part 6 of Schedule 2 to the said Order and not being development comprised within any other Class.
documentation-url: https://www.peakdistrict.gov.uk/article4
document-url: document-url missing
notes
entry-date: 1999-05-21
start-date: 1999-06-22
end-date

Your data is missing a document-url.

The Article 4 direction guidance explains how to fix the issue:

The URL of an authoritative order or notice designating the article 4 direction.

Example: http://www.LPAwebsite.org.uk/article4direction1.pdf