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: 526
name: THE BIRMINGHAM (LAND REAR OF 156-180 CLEMENTS ROAD, YARDLEY) TPO 1987
tree-preservation-order: undefined
TPO 526
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.814100 52.469467,-1.814419 52.469048,-1.814361 52.469028,-1.814456 52.468874,-1.814540 52.468892,-1.814670 52.468728,-1.814733 52.468715,-1.815190 52.468835,-1.815294 52.468656,-1.815021 52.468625,-1.815013 52.468649,-1.814990 52.468647,-1.814681 52.468598,-1.814685 52.468591,-1.814499 52.468563,-1.814502 52.468555,-1.814456 52.468550,-1.814428 52.468596,-1.814089 52.468512,-1.814060 52.468571,-1.814034 52.468713,-1.813793 52.469257,-1.813783 52.469301,-1.813765 52.469319,-1.813761 52.469357,-1.814100 52.469467)))
point: POINT (-1.814317 52.468916)
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.