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_026
name: G26
tree-preservation-order: undefined
TPO1985_023
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.441052 53.762811,-1.440969 53.762835,-1.440911 53.762861,-1.440895 53.762884,-1.440887 53.762922,-1.440893 53.762949,-1.440938 53.763012,-1.440938 53.763048,-1.440899 53.763185,-1.440899 53.763225,-1.440915 53.763263,-1.440953 53.763295,-1.440999 53.763311,-1.441054 53.763317,-1.441117 53.763311,-1.441164 53.763290,-1.441230 53.763212,-1.441258 53.763191,-1.441301 53.763178,-1.441355 53.763175,-1.441620 53.763234,-1.441685 53.763237,-1.441789 53.763203,-1.441828 53.763173,-1.441834 53.763151,-1.441805 53.763124,-1.441648 53.763037,-1.441461 53.762885,-1.441418 53.762869,-1.441304 53.762860,-1.441121 53.762814,-1.441052 53.762811)))
point: POINT (-1.441268 53.763062)
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.