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: 316
name: THE BIRMINGHAM (OAKLANDS 35 WINLEIGH ROAD HANDSWORTH) TPO 1980
tree-preservation-order: undefined
TPO 316
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.929723 52.515436,-1.929788 52.515345,-1.929964 52.515052,-1.929787 52.514996,-1.929749 52.514973,-1.929686 52.514917,-1.929406 52.514909,-1.929199 52.514865,-1.928923 52.515278,-1.929723 52.515436)))
point: POINT (-1.929456 52.515149)
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.