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: 857
name: THE BIRMINGHAM (503-509 ALDRIDGE ROAD AND LAND AT PAPER MILL END, GREAT BARR) TPO 1999
tree-preservation-order: undefined
TPO 857
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.898183 52.533657,-1.898201 52.533646,-1.898194 52.533551,-1.897461 52.533566,-1.897460 52.533552,-1.897405 52.533547,-1.897578 52.532838,-1.897275 52.532802,-1.897157 52.532798,-1.897131 52.532945,-1.896994 52.533444,-1.896960 52.533634,-1.897024 52.533666,-1.897093 52.533678,-1.898183 52.533657)))
point: POINT (-1.897364 52.533314)
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.