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: 96/00951/C/1
name: Land off New Lane, Skircoat Green, Halifax.
tree-preservation-order: undefined
96/00951/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.866754 53.703275,-1.866740 53.703257,-1.866261 53.703266,-1.866230 53.703256,-1.866239 53.703226,-1.866234 53.703213,-1.866245 53.703133,-1.866246 53.703026,-1.866211 53.702859,-1.866170 53.702816,-1.866099 53.702787,-1.866062 53.702840,-1.866027 53.702959,-1.866028 53.703045,-1.866067 53.703168,-1.866153 53.703290,-1.866754 53.703275)),((-1.868633 53.702484,-1.868401 53.702429,-1.868042 53.702367,-1.867440 53.702289,-1.867008 53.702166,-1.866644 53.702046,-1.866541 53.702214,-1.866544 53.702226,-1.866556 53.702231,-1.866929 53.702328,-1.866858 53.702437,-1.866974 53.702466,-1.867187 53.702493,-1.867345 53.702526,-1.867473 53.702564,-1.867541 53.702602,-1.867597 53.702720,-1.867628 53.702766,-1.867745 53.702768,-1.867744 53.702790,-1.867857 53.702781,-1.867863 53.702746,-1.867853 53.702734,-1.867883 53.702688,-1.867967 53.702630,-1.868050 53.702609,-1.868106 53.702625,-1.868136 53.702678,-1.868152 53.702730,-1.868504 53.702698,-1.868633 53.702484)))
point: POINT (-1.867424 53.702532)
notes: Beech, elm, hawthorn, holly, horse chestnut, lime, sycamore
entry-date: 1996-08-16
start-date: 1996-08-16
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.