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: TPO1995_022_G_013
name: G13
tree-preservation-order: undefined
TPO1995_022
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.567915 53.838591,-1.567974 53.838616,-1.568083 53.838623,-1.568125 53.838615,-1.568163 53.838597,-1.568234 53.838524,-1.568270 53.838456,-1.568273 53.838356,-1.568246 53.838278,-1.568196 53.838223,-1.568143 53.838194,-1.568093 53.838183,-1.568015 53.838180,-1.567933 53.838186,-1.567895 53.838216,-1.567885 53.838264,-1.567930 53.838348,-1.567948 53.838407,-1.567940 53.838472,-1.567892 53.838538,-1.567889 53.838560,-1.567899 53.838581,-1.567915 53.838591)))
point: POINT (-1.568077 53.838397)
notes
entry-date: 2026-02-12
start-date: 1995-03-30
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.