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: 654
name: THE BIRMINGHAM (R/O 685 PERSHORE ROAD, SELLY OAK) TPO 1994
tree-preservation-order: undefined
TPO 654
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.915412 52.445098,-1.915855 52.445125,-1.915883 52.445083,-1.915898 52.445015,-1.915614 52.444988,-1.915611 52.444996,-1.915440 52.444982,-1.915412 52.445098)))
point: POINT (-1.915654 52.445054)
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.