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: 755
name: THE BIRMINGHAM (159 COLE VALLEY ROAD, HALL GREEN ) TPO 1997
tree-preservation-order: undefined
TPO 755
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.856346 52.427754,-1.856391 52.427642,-1.856024 52.427545,-1.855898 52.427539,-1.855628 52.427486,-1.855586 52.427594,-1.856179 52.427713,-1.856346 52.427754)))
point: POINT (-1.855995 52.427615)
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.