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: 684
name: THE BIRMINGHAM (KELMSCOTT ROAD, HARBORNE) TPO 1995
tree-preservation-order: undefined
TPO 684
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.964551 52.467681,-1.964540 52.467639,-1.964540 52.467603,-1.964628 52.467119,-1.964660 52.467009,-1.964584 52.466997,-1.964498 52.466966,-1.963876 52.467449,-1.963949 52.467545,-1.964096 52.467778,-1.964551 52.467681)))
point: POINT (-1.96431 52.467405)
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.