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: 2
name: THE BIRMINGHAM (BEECHMORE ROAD, SHELDON) TPO 1966
tree-preservation-order: undefined
TPO 2
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.793110 52.457422,-1.792859 52.457716,-1.792766 52.457667,-1.792751 52.457693,-1.792559 52.457908,-1.792558 52.457923,-1.792571 52.457924,-1.792623 52.458072,-1.792642 52.458087,-1.792804 52.458375,-1.794373 52.458268,-1.794706 52.458315,-1.793569 52.457951,-1.793566 52.457944,-1.793105 52.457799,-1.793100 52.457806,-1.793090 52.457804,-1.792917 52.457749,-1.793176 52.457447,-1.793110 52.457422)))
point: POINT (-1.793286 52.458076)
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.