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: 227
name: THE BIRMINGHAM (808 WALSALL ROAD GREAT BARR) TPO 1976
tree-preservation-order: undefined
TPO 227
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.926077 52.540096,-1.926455 52.539886,-1.926210 52.539683,-1.925696 52.539929,-1.925686 52.539942,-1.925701 52.539952,-1.925726 52.539949,-1.925748 52.539970,-1.925737 52.539979,-1.925739 52.539995,-1.925937 52.540173,-1.926077 52.540096)))
point: POINT (-1.926068 52.539923)
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.