Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: TPO1960_003AIR_A_027
name: A27
tree-preservation-order: undefined
TPO1960_003AIR
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.680866 53.845040,-1.680724 53.845123,-1.684847 53.846111,-1.687279 53.846832,-1.688909 53.847134,-1.690258 53.847269,-1.691768 53.847332,-1.692633 53.847489,-1.693962 53.847707,-1.695834 53.847867,-1.695936 53.847783,-1.695453 53.847711,-1.694667 53.847709,-1.691809 53.847237,-1.690279 53.847161,-1.689332 53.847088,-1.687200 53.846701,-1.685109 53.846088,-1.684204 53.845847,-1.683158 53.845642,-1.682374 53.845449,-1.680866 53.845040)))
point: POINT (-1.68854 53.846765)
notes
entry-date: 2026-02-12
start-date: 1963-07-14
end-date

Your dataset is missing the tree-preservation-order column.

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

The reference for the tree preservation order that covers this zone.