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: 89
name: THE BIRMINGHAM (LAND ADJOINING HAWTHORNE HOUSE, HAMSTEAD HALL ROAD, HANDSWORTH WOOD) TPO 1971
tree-preservation-order: undefined
TPO 89
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.934409 52.522330,-1.934654 52.522006,-1.935409 52.522212,-1.935442 52.522206,-1.935726 52.521836,-1.936648 52.521949,-1.936747 52.521970,-1.937185 52.522013,-1.937238 52.522011,-1.937283 52.521856,-1.937381 52.521699,-1.937421 52.521602,-1.937422 52.521546,-1.937410 52.521516,-1.937415 52.521476,-1.937396 52.521459,-1.937378 52.521423,-1.937383 52.521408,-1.937632 52.521062,-1.936348 52.520748,-1.936010 52.520679,-1.936062 52.521170,-1.935193 52.521538,-1.934594 52.521587,-1.934625 52.521720,-1.934270 52.521751,-1.934303 52.521810,-1.934335 52.522042,-1.934339 52.522090,-1.934331 52.522118,-1.934344 52.522146,-1.934355 52.522248,-1.934394 52.522345,-1.934409 52.522330)))
point: POINT (-1.936132 52.521531)
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.