Tree preservation zone

There is a problem

tree-preservation-order column must match the reference field in the tree preservation order dataset

reference: TPO7353
name: Forming roadside belt to the eastern boundary of A15
tree-preservation-order: undefined
Redbourne 1949
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-0.538230 53.485069,-0.538326 53.484944,-0.538389 53.484798,-0.538445 53.484645,-0.538460 53.484619,-0.538481 53.484558,-0.538494 53.484493,-0.538498 53.484463,-0.538500 53.484428,-0.538497 53.484379,-0.538491 53.484337,-0.538476 53.484255,-0.538467 53.484218,-0.538413 53.484033,-0.538374 53.483892,-0.538367 53.483873,-0.538319 53.483702,-0.538148 53.483113,-0.538099 53.482936,-0.538043 53.482919,-0.537951 53.482883,-0.537911 53.482866,-0.537857 53.482837,-0.537898 53.482973,-0.538074 53.483585,-0.538257 53.484241,-0.538269 53.484448,-0.538224 53.484660,-0.538082 53.484982,-0.538230 53.485069)))
point: POINT (-0.538228 53.483976)
notes
entry-date: 1949-09-13
start-date: 1949-05-26
end-date

Your data is missing a tree-preservation-order.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.