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: 328
name: THE BIRMINGHAM (LAND AT JUNCTION OF OSCOTT SCHOOL LANE & OLD OSCOTT HILL, KINGSTANDING) TPO 1980
tree-preservation-order: undefined
TPO 328
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.893929 52.547279,-1.893727 52.547216,-1.893034 52.547174,-1.892379 52.547588,-1.892517 52.547787,-1.892624 52.547985,-1.892587 52.548009,-1.892618 52.548058,-1.892593 52.548096,-1.892909 52.548296,-1.893248 52.548062,-1.893529 52.547822,-1.893708 52.547605,-1.893929 52.547279)))
point: POINT (-1.893109 52.54765)
notes: The shaded area represents those properties which fall within the outline of a Tree Preservation Order. To precisely identify trees protected by the Order, you can request a copy of the tree preservation order at the following link.
organisation
entry-date: 2025-11-30
start-date
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.