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: 520
name: THE BIRMINGHAM (105-107 BRISTOL ROAD, EDGBASTON) TPO 1987
tree-preservation-order: undefined
TPO 520
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.905061 52.462653,-1.905171 52.462515,-1.905551 52.462643,-1.905667 52.462488,-1.904731 52.462175,-1.904372 52.462572,-1.904372 52.462582,-1.904411 52.462582,-1.904950 52.462767,-1.905061 52.462653)))
point: POINT (-1.904953 52.462477)
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.