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: 259
name: THE BIRMINGHAM (ST GEORGES GARDENS GREAT HAMPTON ROW, HOCKLEY) TPO 1977
tree-preservation-order: undefined
TPO 259
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.905157 52.491090,-1.905499 52.491095,-1.905519 52.491090,-1.905662 52.490736,-1.905639 52.490716,-1.903988 52.490691,-1.903970 52.490708,-1.903941 52.490785,-1.903851 52.491061,-1.904572 52.491103,-1.904584 52.491080,-1.905157 52.491090)))
point: POINT (-1.90475 52.490894)
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.