Tree preservation zone

There is a problem

453 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: 89/00481/C
name: Trinity Place, Halifax
tree-preservation-order: undefined
89/00481/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.864289 53.719621,-1.864346 53.719772,-1.864383 53.719767,-1.864380 53.719757,-1.864390 53.719746,-1.864367 53.719742,-1.864351 53.719701,-1.864370 53.719695,-1.864355 53.719683,-1.864369 53.719679,-1.864370 53.719671,-1.864355 53.719665,-1.864340 53.719673,-1.864318 53.719618,-1.864289 53.719621),(-1.864355 53.719683,-1.864345 53.719686,-1.864343 53.719679,-1.864350 53.719683,-1.864355 53.719683)),((-1.864235 53.719414,-1.864250 53.719423,-1.864265 53.719412,-1.864245 53.719405,-1.864235 53.719414)),((-1.864250 53.719459,-1.864265 53.719468,-1.864280 53.719457,-1.864260 53.719450,-1.864250 53.719459)),((-1.864265 53.719486,-1.864280 53.719495,-1.864295 53.719483,-1.864275 53.719477,-1.864265 53.719486)))
point: POINT (-1.864328 53.719666)
notes: Hawthorn
entry-date: 1990-02-05
start-date: 1990-02-05
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.