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: 568
name: THE BIRMINGHAM (LAND REAR OF 77-91 BUTLERS ROAD, HANDSWORTH WOOD) TPO 1990
tree-preservation-order: undefined
TPO 568
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.924845 52.519212,-1.924630 52.519168,-1.924548 52.519101,-1.924267 52.518976,-1.924098 52.518916,-1.923899 52.519092,-1.923866 52.519299,-1.924845 52.519212)))
point: POINT (-1.924226 52.519137)
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.