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: 184
name: THE BIRMINGHAM (LAND ADJOINING 128 BROAD LANE REAR OF 9-37 BAYSTON ROAD, KINGS HEATH) TPO 1973
tree-preservation-order: undefined
TPO 184
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.893969 52.414507,-1.894028 52.414501,-1.893905 52.414119,-1.894259 52.414067,-1.894105 52.413466,-1.894074 52.413315,-1.894063 52.413274,-1.894051 52.413274,-1.894027 52.413205,-1.893992 52.413034,-1.893359 52.413022,-1.893350 52.413038,-1.893349 52.413183,-1.893297 52.413257,-1.893206 52.413351,-1.893200 52.413402,-1.893208 52.413519,-1.893339 52.413696,-1.893373 52.413694,-1.893421 52.413769,-1.893489 52.413788,-1.893555 52.413848,-1.893590 52.413946,-1.893665 52.413976,-1.893800 52.414255,-1.893901 52.414511,-1.893969 52.414507)))
point: POINT (-1.893752 52.413598)
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.