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: 31
name: THE BIRMINGHAM (SITE ADJOINING 763 PERSHORE ROAD, SELLY PARK) TPO 1970
tree-preservation-order: undefined
TPO 31
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.915399 52.443169,-1.915356 52.443485,-1.917096 52.443437,-1.917117 52.443755,-1.917486 52.443709,-1.917425 52.443499,-1.917754 52.443450,-1.917945 52.443432,-1.917978 52.443465,-1.918627 52.443374,-1.918592 52.443354,-1.918294 52.442896,-1.918170 52.442729,-1.917995 52.442546,-1.917126 52.442842,-1.916855 52.442910,-1.916861 52.442915,-1.915399 52.443169)))
point: POINT (-1.917147 52.443173)
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.