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: 835
name: THE BIRMINGHAM (LAND AT KIRKWALL ROAD/ TAMERTON ROAD, BARTLEY GREEN) TPO 1999
tree-preservation-order: undefined
TPO 835
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.989765 52.436872,-1.989917 52.436721,-1.990134 52.436684,-1.990447 52.436618,-1.990830 52.436528,-1.991223 52.436393,-1.991057 52.436107,-1.991076 52.436089,-1.990989 52.435960,-1.990756 52.436022,-1.990722 52.436039,-1.990608 52.436038,-1.990505 52.436051,-1.990244 52.436151,-1.989903 52.436226,-1.989454 52.436340,-1.989210 52.436385,-1.989093 52.436379,-1.988772 52.436326,-1.988660 52.436528,-1.988654 52.436592,-1.988690 52.436925,-1.988672 52.437069,-1.988872 52.437021,-1.988965 52.437016,-1.989178 52.436962,-1.989417 52.436916,-1.989765 52.436872)))
point: POINT (-1.989835 52.436505)
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.