Tree preservation zone

There is a problem

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

reference: TPO168.A1
name: No info.
tree-preservation-order: undefined
TPO168
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.924819 53.371261,-2.924866 53.371283,-2.924984 53.371346,-2.925069 53.371383,-2.925078 53.371389,-2.925087 53.371416,-2.925201 53.371475,-2.925356 53.371563,-2.925466 53.371621,-2.925554 53.371672,-2.925650 53.371723,-2.925954 53.371893,-2.926078 53.371960,-2.926084 53.371956,-2.926095 53.371953,-2.926106 53.371951,-2.926114 53.371953,-2.926119 53.371956,-2.926124 53.371963,-2.926119 53.371966,-2.926164 53.371989,-2.926175 53.371993,-2.926184 53.372001,-2.926184 53.372006,-2.926181 53.372010,-2.926174 53.372013,-2.926239 53.372050,-2.926243 53.372047,-2.926370 53.372117,-2.926549 53.371998,-2.926898 53.371773,-2.927516 53.371368,-2.926443 53.370913,-2.926236 53.370828,-2.926189 53.370807,-2.926497 53.370530,-2.927334 53.369841,-2.926216 53.369314,-2.925796 53.369664,-2.925669 53.369768,-2.925452 53.369951,-2.925350 53.370033,-2.925032 53.370301,-2.924651 53.370616,-2.924423 53.370809,-2.924417 53.370807,-2.924243 53.370948,-2.924292 53.370973,-2.924778 53.371244,-2.924797 53.371254,-2.924819 53.371261)))
point: POINT (-2.925975 53.370761)
notes: The several tree of whatever species situated within area A1 on map.
entry-date: 1977-09-09
start-date: 1978-03-13
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.