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: 640
name: THE BIRMINGHAM (NEW INNS HOLYHEAD ROAD, HANDSWORTH) TPO 1993
tree-preservation-order: undefined
TPO 640
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.948575 52.507368,-1.948579 52.507262,-1.948592 52.507178,-1.948637 52.507031,-1.948738 52.506840,-1.948825 52.506745,-1.948818 52.506730,-1.948525 52.506630,-1.947665 52.506291,-1.947556 52.506401,-1.947309 52.506599,-1.947275 52.506620,-1.947156 52.506633,-1.947080 52.507325,-1.947866 52.507320,-1.948575 52.507368)))
point: POINT (-1.947887 52.506903)
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.