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: 300
name: THE BIRMINGHAM (1671 BRISTOL ROAD SOUTH, LONGBRIDGE) TPO 1979
tree-preservation-order: undefined
TPO 300
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.996570 52.396453,-1.996481 52.396772,-1.996129 52.397133,-1.996226 52.397161,-1.996980 52.396416,-1.996975 52.396403,-1.997071 52.396305,-1.996752 52.396301,-1.996640 52.396455,-1.996570 52.396453)))
point: POINT (-1.996632 52.396636)
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.