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: TPO1996_064_G_001
name: G1
tree-preservation-order: undefined
TPO1996_064
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.528362 53.858238,-1.528336 53.858236,-1.528257 53.858257,-1.528239 53.858273,-1.528231 53.858302,-1.528272 53.858357,-1.528351 53.858390,-1.528620 53.858414,-1.528741 53.858434,-1.528838 53.858470,-1.528908 53.858514,-1.528968 53.858533,-1.529035 53.858542,-1.529307 53.858536,-1.529446 53.858561,-1.529478 53.858515,-1.529419 53.858481,-1.529365 53.858466,-1.529093 53.858409,-1.529046 53.858374,-1.528972 53.858343,-1.528776 53.858338,-1.528619 53.858284,-1.528424 53.858242,-1.528362 53.858238)))
point: POINT (-1.528814 53.858402)
notes
entry-date: 2026-02-12
start-date: 1996-09-05
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.