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: 403
name: THE BIRMINGHAM (LAND REAR OF 52 HOLLYFIELD ROAD, SUTTON COLDFIELD) TPO 1983
tree-preservation-order: undefined
TPO 403
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.803359 52.563251,-1.803292 52.563055,-1.802816 52.563143,-1.802635 52.563191,-1.802283 52.563261,-1.802260 52.563186,-1.801747 52.563244,-1.801895 52.563463,-1.801732 52.563505,-1.801308 52.563578,-1.801228 52.563602,-1.801202 52.563611,-1.801168 52.563711,-1.801616 52.563630,-1.801656 52.563615,-1.803359 52.563251)))
point: POINT (-1.802355 52.563347)
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.