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: 609
name: THE BIRMINGHAM (LAND REAR OF BERKLEY HOUSE, WALMLEY ROAD/ CNR WITH WYLDE GREEN ROAD, SUTTON COLDFIELD) TPO 1994
tree-preservation-order: undefined
TPO 609
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.802149 52.541484,-1.802172 52.541293,-1.801827 52.541263,-1.801229 52.541252,-1.801230 52.541244,-1.800954 52.541238,-1.800953 52.541249,-1.800775 52.541241,-1.800770 52.541263,-1.800746 52.541272,-1.800442 52.541261,-1.800423 52.541467,-1.800437 52.541517,-1.800462 52.541561,-1.800498 52.541600,-1.800558 52.541631,-1.800670 52.541666,-1.800841 52.541477,-1.800902 52.541460,-1.802149 52.541484)))
point: POINT (-1.801209 52.541387)
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.