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: 6
name: THE BIRMINGHAM (LONGBRIDGE SOCIAL CLUB, BRISTOL ROAD SOUTH, LONGBRIDGE) TPO 1967
tree-preservation-order: undefined
TPO 6
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.973254 52.408464,-1.974173 52.408984,-1.973709 52.409280,-1.973852 52.409359,-1.973898 52.409372,-1.974009 52.409369,-1.974047 52.409355,-1.974147 52.409293,-1.974907 52.408593,-1.975188 52.408299,-1.974665 52.408054,-1.973726 52.407927,-1.973718 52.408015,-1.973606 52.408101,-1.973555 52.408244,-1.973254 52.408464)))
point: POINT (-1.97421 52.408512)
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.