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: 56
name: THE BIRMINGHAM (SHERBOURNE ROAD, ACOCKS GREEN) TPO 1964
tree-preservation-order: undefined
TPO 56
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.822302 52.449800,-1.822379 52.449713,-1.822614 52.449362,-1.822224 52.449261,-1.821928 52.449191,-1.821849 52.449181,-1.821723 52.449186,-1.821658 52.449202,-1.821298 52.449335,-1.821564 52.449675,-1.821651 52.449735,-1.821783 52.449778,-1.821803 52.449752,-1.821941 52.449730,-1.822050 52.449746,-1.822302 52.449800)))
point: POINT (-1.821957 52.449476)
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.