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: 250
name: THE BIRMINGHAM (81-93 HAMSTEAD ROAD & 2-10 HALL ROAD, HANDSWORTH) TPO 1977
tree-preservation-order: undefined
TPO 250
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.920335 52.503474,-1.920208 52.503343,-1.919817 52.502982,-1.919606 52.502834,-1.919415 52.502712,-1.919193 52.502539,-1.918935 52.502319,-1.918904 52.502318,-1.918851 52.503117,-1.918844 52.503367,-1.918862 52.503464,-1.918901 52.503587,-1.919040 52.503878,-1.919119 52.504002,-1.920540 52.503659,-1.920335 52.503474)))
point: POINT (-1.919462 52.503304)
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.