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: 812
name: THE BIRMINGHAM (THE OAKS AND 5-25 GREENWAY GARDENS, HAWKESLEY) TPO 1999
tree-preservation-order: undefined
TPO 812
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.934970 52.390772,-1.934784 52.390793,-1.934625 52.390822,-1.934421 52.390886,-1.934302 52.390936,-1.934143 52.391020,-1.933899 52.391181,-1.933820 52.391249,-1.933927 52.391331,-1.933985 52.391352,-1.934016 52.391396,-1.934095 52.391388,-1.934189 52.391361,-1.934198 52.391373,-1.934375 52.391294,-1.934616 52.391412,-1.934647 52.391439,-1.934758 52.391493,-1.934766 52.391491,-1.934886 52.391394,-1.934967 52.391356,-1.935141 52.391238,-1.935166 52.391199,-1.935170 52.391164,-1.935185 52.391133,-1.935219 52.391095,-1.935262 52.391069,-1.935122 52.390946,-1.934970 52.390772)))
point: POINT (-1.934603 52.391128)
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.