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: 135
name: THE BIRMINGHAM (LAND REAR OF 63-85 BROUGHTON CRESCENT, LONGBRIDGE) TPO 1975
tree-preservation-order: undefined
TPO 135
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.988121 52.399746,-1.988181 52.399706,-1.988241 52.399653,-1.988379 52.399590,-1.988868 52.399314,-1.988248 52.398951,-1.988069 52.398837,-1.988025 52.398861,-1.988104 52.399020,-1.988158 52.399170,-1.988175 52.399299,-1.988165 52.399446,-1.988141 52.399558,-1.988113 52.399611,-1.987981 52.399786,-1.988121 52.399746)))
point: POINT (-1.988365 52.399306)
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.