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: 999
name: THE BIRMINGHAM (10 WENTWORTH ROAD, FOUR OAKS, SUTTON COLDFIELD) TPO 2004
tree-preservation-order: undefined
TPO 999
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.832151 52.577765,-1.831880 52.577986,-1.833229 52.578631,-1.833455 52.578442,-1.833505 52.578463,-1.833523 52.578447,-1.833474 52.578425,-1.833934 52.578007,-1.833799 52.577987,-1.833668 52.577945,-1.833500 52.577928,-1.833437 52.577894,-1.833438 52.577854,-1.833332 52.577835,-1.833319 52.577878,-1.833155 52.577810,-1.832895 52.578064,-1.832151 52.577765)))
point: POINT (-1.832965 52.57815)
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.