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: 1236
name: THE BIRMINGHAM (ST. JOHN'S ROAD CAR PARK, ST. JOHN'S ROAD, HARBORNE) TPO 2008
tree-preservation-order: undefined
TPO 1236
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.947132 52.460026,-1.947078 52.459982,-1.947014 52.459897,-1.946654 52.460038,-1.946743 52.460122,-1.946692 52.460141,-1.946683 52.460133,-1.946633 52.460154,-1.946652 52.460173,-1.946609 52.460192,-1.946505 52.460098,-1.945898 52.460335,-1.946259 52.460716,-1.946904 52.460488,-1.946724 52.460296,-1.946956 52.460117,-1.947132 52.460026)))
point: POINT (-1.946496 52.460338)
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.