Tree preservation zone

There is a problem

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

reference: TPO252.A1
name: Site of Aigburth House, Aigburth Vale, on the corner of Carnatic Road.
tree-preservation-order: undefined
TPO252
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.930686 53.378393,-2.930895 53.378146,-2.930896 53.378143,-2.930930 53.378105,-2.931024 53.377990,-2.930778 53.377915,-2.930577 53.377851,-2.930094 53.377692,-2.930087 53.377696,-2.930056 53.377730,-2.929931 53.377688,-2.929886 53.377825,-2.929866 53.377880,-2.929848 53.377913,-2.929840 53.377923,-2.929827 53.377945,-2.929768 53.378020,-2.929744 53.378054,-2.929722 53.378079,-2.929686 53.378129,-2.929659 53.378182,-2.929647 53.378212,-2.929636 53.378248,-2.929624 53.378296,-2.929616 53.378344,-2.929617 53.378379,-2.929611 53.378490,-2.929615 53.378537,-2.929626 53.378557,-2.929642 53.378573,-2.929661 53.378586,-2.929675 53.378592,-2.929710 53.378603,-2.929735 53.378608,-2.930034 53.378623,-2.930331 53.378640,-2.930477 53.378646,-2.930506 53.378609,-2.930647 53.378443,-2.930684 53.378398,-2.930686 53.378393)))
point: POINT (-2.930231 53.378198)
notes: The several tree of whatever species situated within area A1 on map.
entry-date: 1992-02-21
start-date: 1992-04-13
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.