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: 860
name: THE BIRMINGHAM (LAND TO THE FRONTAGES OF 211b TO 217a HILL VILLAGE ROAD, AND ON THE LAND AT 219 HILL VILLAGE ROAD, SUTTON COLDFIELD) TPO 1999
tree-preservation-order: undefined
TPO 860
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.836150 52.597405,-1.836617 52.597498,-1.836850 52.597571,-1.836947 52.597612,-1.837053 52.597672,-1.837364 52.597898,-1.838171 52.597652,-1.838018 52.597479,-1.837282 52.597725,-1.837211 52.597672,-1.836911 52.597517,-1.836627 52.597439,-1.836204 52.597337,-1.836150 52.597405)))
point: POINT (-1.837388 52.597641)
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.