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: 440
name: THE BIRMINGHAM (LAND AT 3 & 7 BRACEBRIDGE ROAD, FOUR OAKS, SUTTON COLDFIELD) TPO 1984
tree-preservation-order: undefined
TPO 440
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.830109 52.575212,-1.829572 52.575239,-1.829590 52.575277,-1.829146 52.575164,-1.828987 52.575164,-1.828727 52.575842,-1.828986 52.575893,-1.829356 52.576018,-1.829673 52.576139,-1.830327 52.575405,-1.830061 52.575340,-1.830139 52.575284,-1.830117 52.575212,-1.830109 52.575212)))
point: POINT (-1.829484 52.575598)
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.