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: 160
name: THE BIRMINGHAM (1211 BRISTOL ROAD SOUTH, NORTHFIELD) TPO 1971
tree-preservation-order: undefined
TPO 160
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.980219 52.403900,-1.980248 52.403899,-1.980465 52.403987,-1.980754 52.404017,-1.980713 52.404062,-1.981267 52.404226,-1.981530 52.403914,-1.981551 52.403650,-1.981269 52.403544,-1.980818 52.403953,-1.980518 52.403919,-1.980306 52.403834,-1.980301 52.403822,-1.980219 52.403900)))
point: POINT (-1.981121 52.403905)
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.