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: 8
name: THE BIRMINGHAM (REAR OF 23 CHARTLEY ROAD, ERDINGTON) TPO 1969
tree-preservation-order: undefined
TPO 8
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.860799 52.512944,-1.861015 52.512676,-1.860688 52.512629,-1.860478 52.512654,-1.860494 52.512693,-1.860408 52.512701,-1.860380 52.512689,-1.860333 52.512693,-1.860208 52.512412,-1.860162 52.512419,-1.860169 52.512435,-1.860152 52.512438,-1.860156 52.512444,-1.860104 52.512454,-1.860209 52.512684,-1.860146 52.512767,-1.860799 52.512944)))
point: POINT (-1.860552 52.51273)
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.