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: 632
name: THE BIRMINGHAM (TALLY HO SPORTS GROUND ) TPO 1993
tree-preservation-order: undefined
TPO 632
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.906272 52.454642,-1.906626 52.454196,-1.906242 52.454102,-1.906532 52.453681,-1.906133 52.453547,-1.905232 52.453025,-1.905113 52.452955,-1.905107 52.452945,-1.904823 52.453144,-1.904581 52.453275,-1.904470 52.453322,-1.904182 52.453419,-1.903758 52.453542,-1.903723 52.453570,-1.903525 52.453676,-1.903423 52.453758,-1.902956 52.454174,-1.902916 52.454196,-1.902883 52.454279,-1.902900 52.454297,-1.903484 52.454646,-1.903577 52.454682,-1.904145 52.454787,-1.904885 52.454873,-1.905338 52.454938,-1.905982 52.455005,-1.906272 52.454642)))
point: POINT (-1.904889 52.454088)
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.