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: 865
name: THE BIRMINGHAM (136 - 138 KINGSBURY ROAD, ERDINGTON) TPO 1999
tree-preservation-order: undefined
TPO 865
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.843439 52.515671,-1.843423 52.515638,-1.843307 52.515664,-1.843273 52.515699,-1.843256 52.515757,-1.843198 52.516191,-1.843492 52.516180,-1.843549 52.516161,-1.843655 52.516144,-1.843439 52.515671)))
point: POINT (-1.843396 52.515959)
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.