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: 502
name: THE BIRMINGHAM (129 OXFORD ROAD, ACOCKS GREEN) TPO 1987
tree-preservation-order: undefined
TPO 502
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.821699 52.448656,-1.821487 52.448656,-1.821261 52.448894,-1.821544 52.448990,-1.821588 52.448985,-1.821622 52.448950,-1.821664 52.448864,-1.821681 52.448805,-1.821699 52.448656)))
point: POINT (-1.821516 52.448818)
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.