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: 645
name: THE BIRMINGHAM (19A-21 HERMITAGE ROAD, EDGBASTON) TPO 1994
tree-preservation-order: undefined
TPO 645
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.951311 52.470129,-1.951049 52.470078,-1.950678 52.470029,-1.949900 52.469975,-1.949861 52.469986,-1.949846 52.470006,-1.949856 52.470036,-1.949900 52.470105,-1.949985 52.470191,-1.950098 52.470267,-1.950218 52.470330,-1.950239 52.470359,-1.950737 52.470666,-1.951181 52.470399,-1.951311 52.470129)))
point: POINT (-1.950621 52.470258)
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.