Tree preservation zone

There is a problem

reference: TPO 0015 (1972)/A1
name: Bourn Parish
tree-preservation-order: TPO 0015 (1972)
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.064373 52.189590,-0.064459 52.189534,-0.064782 52.189768,-0.064896 52.189842,-0.065015 52.189938,-0.067476 52.188873,-0.068261 52.188581,-0.068544 52.188719,-0.068593 52.188691,-0.069004 52.188429,-0.069146 52.188323,-0.069182 52.188287,-0.069251 52.188191,-0.069324 52.188071,-0.069340 52.188032,-0.069423 52.187713,-0.069473 52.187398,-0.069519 52.186983,-0.069569 52.186381,-0.069005 52.186190,-0.068884 52.186171,-0.068686 52.186182,-0.067604 52.186411,-0.066698 52.186658,-0.066366 52.186768,-0.066059 52.186886,-0.065798 52.187005,-0.065754 52.187036,-0.065745 52.187053,-0.065728 52.187187,-0.065706 52.187240,-0.065623 52.187330,-0.065581 52.187357,-0.065467 52.187406,-0.064991 52.187584,-0.065017 52.187658,-0.065261 52.187906,-0.065197 52.187930,-0.065325 52.188064,-0.064406 52.188472,-0.064254 52.188513,-0.064157 52.188467,-0.064132 52.188524,-0.064065 52.188631,-0.063823 52.189006,-0.063727 52.189134,-0.063615 52.189182,-0.063134 52.189559,-0.063246 52.189614,-0.063576 52.189308,-0.063639 52.189263,-0.063799 52.189293,-0.063874 52.189347,-0.064220 52.189516,-0.064306 52.189550,-0.064373 52.189590)))
point: POINT (-0.066887 52.187981)
notes
entry-date: 2025-06-27
start-date: start-date must be a real date
1972-07-26
end-date

Your dataset is missing the start-date column.

The Tree preservation zone guidance explains how to fix the issue:

The date that the tree preservation order came into force, written in YYYY-MM-DD format.

Example: 1984-03-28