Tree preservation zone

There is a problem

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

reference: TPO237
name: In OS 0534
tree-preservation-order: undefined
Elsham 1972
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.429135 53.614429,-0.429014 53.614342,-0.428888 53.614255,-0.428772 53.614168,-0.428664 53.614079,-0.428624 53.614044,-0.428533 53.613961,-0.428510 53.613938,-0.428494 53.613951,-0.428495 53.613967,-0.428489 53.614017,-0.428485 53.614038,-0.428487 53.614055,-0.428478 53.614075,-0.428469 53.614101,-0.428459 53.614122,-0.428431 53.614170,-0.428385 53.614242,-0.428368 53.614294,-0.428370 53.614314,-0.428396 53.614342,-0.428564 53.614495,-0.428662 53.614581,-0.428710 53.614569,-0.428742 53.614556,-0.428741 53.614541,-0.428752 53.614525,-0.428741 53.614493,-0.428741 53.614472,-0.428749 53.614449,-0.428825 53.614390,-0.428892 53.614355,-0.428924 53.614348,-0.428946 53.614351,-0.428972 53.614418,-0.428985 53.614444,-0.429005 53.614465,-0.429044 53.614474,-0.429089 53.614475,-0.429127 53.614471,-0.429143 53.614461,-0.429147 53.614447,-0.429135 53.614429)))
point: POINT (-0.428665 53.614293)
notes
entry-date: 1972-11-03
start-date: 1972-09-07
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.