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: 350
name: THE BIRMINGHAM (LAND BETWEEN 21 & 25 OAKFIELD ROAD, SELLY PARK) TPO 1981
tree-preservation-order: undefined
TPO 350
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.915383 52.447483,-1.915292 52.447332,-1.915189 52.447167,-1.915161 52.447119,-1.915124 52.447064,-1.914840 52.447131,-1.914895 52.447216,-1.915098 52.447548,-1.915383 52.447483)))
point: POINT (-1.915113 52.447306)
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.
entry-date: 2026-07-25
start-date
end-date

Your data is missing a tree-preservation-order.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.