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: 1617
name: THE BIRMINGHAM (LAND AT THE NATIONAL BLOOD TRANSFUSION CENTRE, VINCENT DRIVE, EDGBASTON) TPO 2020
tree-preservation-order: undefined
TPO 1617
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.934687 52.453483,-1.934693 52.453486,-1.934695 52.453468,-1.934746 52.453460,-1.934860 52.453354,-1.934937 52.453210,-1.935054 52.453084,-1.935218 52.452975,-1.935414 52.452827,-1.934908 52.452466,-1.933845 52.452995,-1.934225 52.453261,-1.934316 52.453266,-1.934466 52.453328,-1.934687 52.453483)))
point: POINT (-1.934664 52.452959)
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.