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: 42
name: THE BIRMINGHAM (SITE ADJOINING 90 REDDITCH ROAD, KING'S NORTON) TPO 1961
tree-preservation-order: undefined
TPO 42
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.931495 52.403439,-1.932017 52.403669,-1.932307 52.403810,-1.932739 52.403507,-1.932952 52.403367,-1.931746 52.403084,-1.931573 52.403349,-1.931495 52.403439)))
point: POINT (-1.932169 52.403427)
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.