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: TPO1986_007_A_001
name: A1
tree-preservation-order: undefined
TPO1986_007
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.580969 53.840849,-1.581250 53.840815,-1.581604 53.840582,-1.582083 53.840284,-1.581947 53.840230,-1.581447 53.839962,-1.581236 53.840164,-1.581148 53.840132,-1.581115 53.840102,-1.580927 53.839993,-1.580784 53.839946,-1.580519 53.839887,-1.580253 53.839866,-1.579697 53.840069,-1.579449 53.840459,-1.579433 53.840524,-1.579568 53.840847,-1.579990 53.841015,-1.580079 53.841058,-1.580137 53.841071,-1.580242 53.841061,-1.580298 53.841045,-1.580437 53.840924,-1.580491 53.840834,-1.580499 53.840784,-1.580604 53.840749,-1.580724 53.840735,-1.580873 53.840754,-1.580937 53.840784,-1.580953 53.840803,-1.580969 53.840849)))
point: POINT (-1.580573 53.840424)
notes
entry-date: 2026-02-12
start-date: 1986-04-15
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.