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: 371
name: THE BIRMINGHAM (LAND REAR OF FIRSHOLM CLOSE, BOLDMERE, SUTTON COLDFIELD) TPO 1982
tree-preservation-order: undefined
TPO 371
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.838490 52.539053,-1.838304 52.538880,-1.838013 52.538638,-1.837917 52.538686,-1.837964 52.538742,-1.837632 52.538798,-1.837795 52.538942,-1.837725 52.538954,-1.838108 52.539314,-1.838545 52.539248,-1.838585 52.539285,-1.838698 52.539199,-1.838490 52.539053)))
point: POINT (-1.838142 52.539016)
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.