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: 230
name: THE BIRMINGHAM (BOURNBROOK ROAD/SERPENTINE ROAD, SELLY PARK) TPO 1977
tree-preservation-order: undefined
TPO 230
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.926901 52.445440,-1.927067 52.445554,-1.927148 52.445598,-1.927242 52.445618,-1.927309 52.445603,-1.927338 52.445581,-1.927302 52.445326,-1.927288 52.445016,-1.926760 52.445347,-1.926901 52.445440)))
point: POINT (-1.927119 52.44535)
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.