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: TPO1985_023_G_001
name: G1
tree-preservation-order: undefined
TPO1985_023
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.444703 53.767246,-1.444835 53.767210,-1.444964 53.767154,-1.445154 53.767050,-1.445383 53.766892,-1.445552 53.766731,-1.445684 53.766584,-1.445807 53.766350,-1.445843 53.766203,-1.445814 53.766071,-1.445547 53.766551,-1.445410 53.766709,-1.445144 53.766875,-1.444870 53.767004,-1.444312 53.767138,-1.444122 53.767204,-1.444075 53.767242,-1.444063 53.767291,-1.444076 53.767409,-1.444091 53.767441,-1.444186 53.767461,-1.444247 53.767451,-1.444288 53.767437,-1.444505 53.767309,-1.444703 53.767246)))
point: POINT (-1.44492 53.766977)
notes
entry-date: 2026-02-12
start-date: 1985-10-08
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.