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: 151
name: THE BIRMINGHAM (31 VICARAGE ROAD, HARBORNE) TPO 1973
tree-preservation-order: undefined
TPO 151
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.961691 52.454191,-1.961721 52.454198,-1.962125 52.454146,-1.962802 52.454016,-1.962791 52.453928,-1.962734 52.453817,-1.962497 52.453544,-1.962378 52.453557,-1.962347 52.453553,-1.962221 52.453600,-1.961610 52.453745,-1.961612 52.453740,-1.961344 52.453803,-1.961266 52.453814,-1.961126 52.453870,-1.961241 52.453920,-1.961306 52.453963,-1.961374 52.454021,-1.961691 52.454191)))
point: POINT (-1.962053 52.453891)
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.