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: 236
name: THE BIRMINGHAM (SITE OF 19 VALENTINE ROAD WITH FRONTAGE TO ASHFIELD AVENUE, KINGS HEATH) TPO 1977
tree-preservation-order: undefined
TPO 236
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.891212 52.439513,-1.891359 52.439412,-1.890933 52.439162,-1.891281 52.438958,-1.891275 52.438953,-1.891532 52.438799,-1.891188 52.438598,-1.889949 52.439272,-1.890834 52.439725,-1.890999 52.439606,-1.891056 52.439623,-1.891212 52.439513)))
point: POINT (-1.890792 52.439187)
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.