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: 506
name: THE BIRMINGHAM (61 WESTFIELD ROAD, EDGBASTON) TPO 1987
tree-preservation-order: undefined
TPO 506
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.943622 52.465748,-1.943700 52.465093,-1.943678 52.465072,-1.943649 52.465062,-1.943469 52.465025,-1.943195 52.464981,-1.942944 52.464957,-1.942851 52.465698,-1.943622 52.465748)))
point: POINT (-1.943274 52.465364)
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.