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: 12
name: THE BIRMINGHAM (CHURCH LANE, HANDSWORTH WOOD) TPO 1965
tree-preservation-order: undefined
TPO 12
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.924167 52.512185,-1.922827 52.511992,-1.922813 52.511998,-1.922788 52.512077,-1.922718 52.512202,-1.922631 52.512312,-1.922599 52.512312,-1.922562 52.512396,-1.922500 52.512584,-1.922493 52.512584,-1.922405 52.512843,-1.922840 52.512739,-1.923140 52.512703,-1.923510 52.512698,-1.923782 52.512715,-1.923983 52.512738,-1.924167 52.512185)))
point: POINT (-1.923284 52.512414)
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.