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: 332
name: THE BIRMINGHAM (LAND REAR OF 137-157 STONEY LANE YARDLEY) TPO 1981
tree-preservation-order: undefined
TPO 332
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.810476 52.470244,-1.809717 52.470159,-1.809690 52.470203,-1.810816 52.470326,-1.810400 52.470977,-1.810348 52.471041,-1.811047 52.471156,-1.811555 52.470361,-1.810476 52.470244)))
point: POINT (-1.810898 52.470674)
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.