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: 36
name: THE BIRMINGHAM (FRIARY ROAD) TPO 1967
tree-preservation-order: undefined
TPO 36
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.934301 52.518764,-1.934924 52.519010,-1.935518 52.519237,-1.935571 52.518800,-1.935544 52.518695,-1.935023 52.518940,-1.934887 52.518902,-1.934693 52.518831,-1.934508 52.518672,-1.934301 52.518764)))
point: POINT (-1.935143 52.518937)
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.