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: TPO1952_001HRS_G_009
name: G9
tree-preservation-order: undefined
TPO1952_001HRS
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.636025 53.854420,-1.635711 53.854416,-1.635680 53.854378,-1.635607 53.854323,-1.635463 53.854268,-1.635425 53.854069,-1.634966 53.854098,-1.635236 53.854942,-1.635253 53.854970,-1.635280 53.854984,-1.636480 53.854911,-1.636548 53.854897,-1.636585 53.854861,-1.636631 53.854849,-1.636918 53.854834,-1.636931 53.854823,-1.636939 53.854768,-1.637046 53.853517,-1.637038 53.853490,-1.636836 53.853532,-1.636801 53.853555,-1.636776 53.853597,-1.636780 53.854066,-1.636767 53.854411,-1.636591 53.854417,-1.636591 53.854648,-1.636583 53.854667,-1.636547 53.854688,-1.636499 53.854698,-1.636103 53.854695,-1.636062 53.854685,-1.636030 53.854658,-1.636023 53.854640,-1.636025 53.854420)))
point: POINT (-1.63602 53.85449)
notes
entry-date: 2026-02-12
start-date: 1952-01-28
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.