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: TPO1991_025_G_002
name: G2
tree-preservation-order: undefined
TPO1991_025
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.520083 53.847454,-1.520103 53.847485,-1.520142 53.847495,-1.520194 53.847490,-1.520231 53.847477,-1.520251 53.847462,-1.520295 53.847355,-1.520315 53.847251,-1.520307 53.847197,-1.520256 53.847090,-1.520164 53.847015,-1.520144 53.846970,-1.520153 53.846941,-1.520200 53.846877,-1.520267 53.846824,-1.520280 53.846801,-1.520275 53.846778,-1.520261 53.846760,-1.520181 53.846744,-1.519978 53.846808,-1.519880 53.846820,-1.519712 53.846813,-1.519669 53.846832,-1.519656 53.846856,-1.519659 53.846877,-1.519687 53.846901,-1.519848 53.846975,-1.519882 53.847009,-1.520016 53.847288,-1.520083 53.847454)))
point: POINT (-1.520068 53.847078)
notes
entry-date: 2026-02-12
start-date: 1991-11-04
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.