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: 837
name: THE BIRMINGHAM (2-16 NURSERY AVENUE AND LAND ADJOINING HOMER STREET, BALSALL HEATH) TPO 1999
tree-preservation-order: undefined
TPO 837
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.888089 52.455822,-1.888086 52.455777,-1.887606 52.455734,-1.887470 52.456099,-1.887474 52.456173,-1.887450 52.456183,-1.887500 52.456203,-1.887624 52.456199,-1.887654 52.456158,-1.887702 52.456157,-1.887731 52.456196,-1.888038 52.456186,-1.888061 52.456478,-1.888138 52.456476,-1.888089 52.455822)))
point: POINT (-1.887828 52.456012)
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.