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: 127
name: THE BIRMINGHAM (51 NORMAN ROAD, NORTHFIELD) TPO 1974
tree-preservation-order: undefined
TPO 127
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.959957 52.410917,-1.960133 52.410894,-1.960337 52.410890,-1.960482 52.410897,-1.960782 52.410937,-1.959793 52.410557,-1.959645 52.410608,-1.959837 52.410752,-1.959957 52.410917)))
point: POINT (-1.960096 52.41077)
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.