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: 495
name: THE BIRMINGHAM (LAND ADJACENT TO 16 MEADOW HILL ROAD, KING'S NORTON) TPO 1987
tree-preservation-order: undefined
TPO 495
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.939259 52.408534,-1.939352 52.408344,-1.938432 52.408187,-1.938364 52.408316,-1.939243 52.408452,-1.939210 52.408524,-1.939259 52.408534)))
point: POINT (-1.938865 52.408331)
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.