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: 498
name: THE BIRMINGHAM ( SITE CORNER OF WELLINGTON ROAD/BIRCHFIELD ROAD, PERRY BARR) TPO 1987
tree-preservation-order: undefined
TPO 498
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.903778 52.516295,-1.903732 52.515970,-1.903836 52.515783,-1.903168 52.515643,-1.903032 52.515629,-1.901947 52.515398,-1.901878 52.515525,-1.901867 52.515523,-1.901848 52.515560,-1.901839 52.515558,-1.901792 52.515668,-1.901774 52.515790,-1.901806 52.515873,-1.901741 52.516046,-1.901692 52.516136,-1.901969 52.516167,-1.901944 52.516233,-1.902100 52.516244,-1.902947 52.516337,-1.903232 52.516380,-1.903523 52.516438,-1.903651 52.516230,-1.903778 52.516295)))
point: POINT (-1.902737 52.515939)
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.