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: 406
name: THE BIRMINGHAM (29 AND LAND ADJOINING SELLY WICK ROAD, SELLY PARK) TPO 1983
tree-preservation-order: undefined
TPO 406
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.919421 52.443848,-1.919410 52.443781,-1.919026 52.443525,-1.918960 52.443498,-1.918879 52.443482,-1.918708 52.443422,-1.918627 52.443374,-1.917978 52.443465,-1.917945 52.443432,-1.917756 52.443450,-1.917424 52.443499,-1.917486 52.443709,-1.916666 52.443801,-1.916633 52.444090,-1.916697 52.444418,-1.917368 52.444403,-1.918063 52.444400,-1.918129 52.444454,-1.918192 52.444489,-1.919421 52.443848)))
point: POINT (-1.917963 52.443938)
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.