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: 1231
name: THE BIRMINGHAM (WEST HEATH HOSPITAL, REDNAL ROAD, KINGS NORTON) TPO 2007
tree-preservation-order: undefined
TPO 1231
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.952403 52.399408,-1.953158 52.399179,-1.953011 52.399018,-1.952954 52.398944,-1.952227 52.398151,-1.952168 52.398100,-1.952730 52.397904,-1.952272 52.397401,-1.952211 52.397421,-1.952152 52.397427,-1.952071 52.397463,-1.951025 52.397815,-1.952403 52.399408)))
point: POINT (-1.952113 52.398354)
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.