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: 431
name: THE BIRMINGHAM (LAND AT FORMER JAFFRAY HOSPITAL, WOOD END LANE AND 7-39 JAFFRAY CRESCENT, ERDINGTON) TPO (No.2) 1999
tree-preservation-order: undefined
TPO 431
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.842544 52.519377,-1.843521 52.519013,-1.843549 52.518996,-1.843565 52.518976,-1.843695 52.518598,-1.843823 52.518171,-1.843870 52.517829,-1.843889 52.517602,-1.843815 52.517480,-1.843748 52.517409,-1.843453 52.517169,-1.843368 52.517168,-1.842757 52.517224,-1.842604 52.517245,-1.842246 52.517313,-1.841399 52.517496,-1.841249 52.517537,-1.841093 52.517599,-1.840942 52.517696,-1.841339 52.517976,-1.841096 52.518089,-1.841306 52.518268,-1.841465 52.518437,-1.842225 52.519423,-1.842283 52.519446,-1.842341 52.519446,-1.842544 52.519377)))
point: POINT (-1.842593 52.518186)
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.