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: 638
name: THE BIRMINGHAM (THE DELL REAR OF HAZEL BANK FAIRMEAD RISEAND GRASSMOORE ROAD, KINGS NORTON) TPO 1993
tree-preservation-order: undefined
TPO 638
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.941466 52.404592,-1.941408 52.404499,-1.941340 52.404450,-1.940844 52.404481,-1.940739 52.404522,-1.940749 52.404535,-1.940784 52.404539,-1.940859 52.404619,-1.940926 52.404648,-1.941046 52.404664,-1.941121 52.404660,-1.941370 52.404622,-1.941466 52.404592)))
point: POINT (-1.941118 52.404555)
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.