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: 165
name: THE BIRMINGHAM (181 PENNS LANE, SUTTON COLDFIELD) TPO 1975
tree-preservation-order: undefined
TPO 165
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.813476 52.536444,-1.813957 52.536433,-1.814032 52.535829,-1.814063 52.535478,-1.814058 52.535394,-1.814080 52.534993,-1.813487 52.535067,-1.813498 52.535453,-1.813518 52.535647,-1.813458 52.536220,-1.813476 52.536444)))
point: POINT (-1.813763 52.535715)
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.