Tree preservation zone

There is a problem

reference: G145-1994
name
tree-preservation-order
tree-preservation-zone-type
geometry: MULTIPOLYGON (((0.598445 51.335867,0.598518 51.335747,0.599272 51.335849,0.599155 51.336103,0.599083 51.336239,0.599165 51.336249,0.599478 51.336332,0.600013 51.336588,0.599704 51.336969,0.600918 51.337294,0.601434 51.336402,0.602102 51.336803,0.601068 51.337350,0.600898 51.337455,0.600839 51.337472,0.600688 51.337564,0.600604 51.337600,0.600302 51.337767,0.600127 51.337843,0.600066 51.337869,0.599686 51.338302,0.599436 51.338630,0.599414 51.338800,0.599562 51.339065,0.598102 51.338723,0.597063 51.338469,0.597471 51.338272,0.597764 51.338072,0.597571 51.337883,0.597005 51.337475,0.597008 51.337394,0.597425 51.336698,0.597884 51.336134,0.598289 51.336217,0.598424 51.335935,0.598445 51.335867)),((0.603487 51.339450,0.603418 51.339473,0.603050 51.339586,0.602987 51.339605,0.602229 51.339853,0.600716 51.339541,0.600299 51.339437,0.600496 51.339365,0.600738 51.339303,0.601676 51.339002,0.601654 51.338843,0.601476 51.338506,0.601013 51.337995,0.600983 51.337867,0.601981 51.337439,0.602312 51.337390,0.602564 51.337672,0.603060 51.337486,0.603146 51.337670,0.603173 51.337838,0.603178 51.337879,0.603183 51.337932,0.603198 51.338092,0.602783 51.338226,0.602737 51.338306,0.603009 51.338743,0.603487 51.339450)))
point: POINT (0.600059 51.337854)
notes
organisation
entry-date: 2025-01-18
start-date: start-date must be a real date
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