Tree preservation zone

There is a problem

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

reference: 92/00671/C
name: Zion congregation church, oldham road, ripponden
tree-preservation-order: undefined
92/00671/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.949019 53.670265,-1.948983 53.670255,-1.949016 53.670209,-1.948335 53.670041,-1.948175 53.670378,-1.948822 53.670543,-1.948880 53.670448,-1.949019 53.670265),(-1.948752 53.670472,-1.948282 53.670358,-1.948424 53.670130,-1.948913 53.670238,-1.948752 53.670472)),((-1.947668 53.670538,-1.947678 53.670547,-1.947698 53.670540,-1.947686 53.670529,-1.947668 53.670538)),((-1.947562 53.670520,-1.947582 53.670529,-1.947592 53.670517,-1.947575 53.670511,-1.947562 53.670520)),((-1.947471 53.670502,-1.947481 53.670511,-1.947502 53.670502,-1.947489 53.670493,-1.947471 53.670502)))
point: POINT (-1.948586 53.670287)
notes: Sycamore (13), 1 Birch, Holly (7), Poplar (2), Ash (4), 1 Lime, Hawthorn (10)
entry-date: 1992-07-17
start-date: 1992-07-17
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.