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: 20
name: THE BIRMINGHAM (HIGHFIELD ROAD, MOSELEY) TPO 1965
tree-preservation-order: undefined
TPO 20
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.875181 52.445208,-1.875761 52.445344,-1.875823 52.445370,-1.876320 52.444937,-1.875967 52.444852,-1.875935 52.444825,-1.876192 52.444589,-1.876246 52.444520,-1.876089 52.444478,-1.875876 52.444440,-1.875567 52.444361,-1.875300 52.444700,-1.875470 52.444740,-1.875181 52.445208)))
point: POINT (-1.875731 52.444876)
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.