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: 550
name: THE BIRMINGHAM (LAND CORNER OF WARSTOCK LANE AND WARSTOCK ROAD, KINGS HEATH) TPO 1989
tree-preservation-order: undefined
TPO 550
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.873337 52.413547,-1.872521 52.413607,-1.872440 52.413620,-1.872347 52.413652,-1.872321 52.413672,-1.872322 52.413698,-1.872338 52.413737,-1.872405 52.413782,-1.872969 52.414053,-1.872932 52.414009,-1.872849 52.413838,-1.872986 52.413811,-1.872972 52.413784,-1.873222 52.413754,-1.873212 52.413707,-1.873345 52.413694,-1.873337 52.413547)))
point: POINT (-1.872825 52.413724)
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.