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: 121
name: THE BIRMINGHAM ( LAND REAR OF 26-32 SOMERSET ROAD, HANDSWORTH WOOD) TPO 1973
tree-preservation-order: undefined
TPO 121
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.929685 52.517771,-1.929957 52.517896,-1.929933 52.517914,-1.930068 52.517976,-1.929875 52.518129,-1.930270 52.518339,-1.930329 52.518282,-1.930463 52.518337,-1.931225 52.518559,-1.931380 52.518375,-1.931497 52.518222,-1.931615 52.518113,-1.931786 52.517899,-1.931137 52.517651,-1.931054 52.517720,-1.930859 52.517641,-1.930416 52.518004,-1.930147 52.517871,-1.929772 52.517700,-1.929685 52.517771)))
point: POINT (-1.930862 52.518073)
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.