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: 136
name: THE BIRMINGHAM (LAND REAR OF 71 FEATHERSTONE ROAD, KINGS HEATH) TPO 1975
tree-preservation-order: undefined
TPO 136
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.897424 52.424289,-1.897364 52.424275,-1.897332 52.424241,-1.897333 52.423802,-1.897500 52.423801,-1.897917 52.423666,-1.897941 52.423645,-1.897947 52.423616,-1.897942 52.423615,-1.897973 52.423563,-1.897972 52.423524,-1.898038 52.423264,-1.898051 52.423236,-1.897389 52.423227,-1.897237 52.423204,-1.897012 52.423190,-1.896996 52.423182,-1.896747 52.423159,-1.896737 52.423323,-1.896709 52.423491,-1.896715 52.424206,-1.897193 52.424219,-1.897192 52.424371,-1.897424 52.424289)))
point: POINT (-1.89724 52.423641)
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.