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: 510
name: THE BIRMINGHAM (7 MULROY ROAD, SUTTON COLDFIELD) TPO 1987
tree-preservation-order: undefined
TPO 510
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.827081 52.570499,-1.827087 52.570316,-1.827172 52.570092,-1.827184 52.570003,-1.827268 52.569761,-1.826346 52.569807,-1.826418 52.570529,-1.827081 52.570499)))
point: POINT (-1.826771 52.570128)
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.