Tree preservation zone

There is a problem

reference: 0301
name
tree-preservation-order: 0301
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.664814 51.561532,-2.664796 51.561496,-2.664747 51.561472,-2.664683 51.561458,-2.664610 51.561471,-2.664569 51.561513,-2.664568 51.561570,-2.664561 51.561583,-2.664496 51.561604,-2.664396 51.561590,-2.664358 51.561609,-2.664314 51.561649,-2.664308 51.561679,-2.664315 51.561703,-2.664336 51.561722,-2.664383 51.561741,-2.664434 51.561750,-2.664497 51.561737,-2.664532 51.561715,-2.664592 51.561742,-2.664647 51.561750,-2.664738 51.561749,-2.664787 51.561723,-2.664813 51.561723,-2.664858 51.561745,-2.664921 51.561744,-2.664971 51.561700,-2.664984 51.561673,-2.664983 51.561649,-2.664942 51.561618,-2.664908 51.561606,-2.664869 51.561607,-2.664798 51.561634,-2.664777 51.561632,-2.664768 51.561625,-2.664761 51.561599,-2.664815 51.561569,-2.664814 51.561532)))
point: POINT (-2.66465 51.561637)
notes
organisation
entry-date: 2025-06-12
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