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: 436
name: THE BIRMINGHAM (LAND OFF DUNTON CLOSE, SUTTON COLDFIELD) TPO 1984
tree-preservation-order: undefined
TPO 436
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.832041 52.597437,-1.832133 52.596452,-1.832127 52.596399,-1.831990 52.596415,-1.831400 52.596425,-1.831418 52.596647,-1.831043 52.596644,-1.830905 52.597142,-1.830732 52.597142,-1.830709 52.597412,-1.832041 52.597437)))
point: POINT (-1.831522 52.596975)
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.