Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: ZZZZDVESXE684
name: The Bucks County Council (Amersham Rural District) Tree Preservation Order No 2 - 1955 Confirmed by
tree-preservation-order: undefined
TPO/1955/002
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.564641 51.654016,-0.564715 51.653870,-0.564746 51.653742,-0.564743 51.653703,-0.564765 51.653667,-0.564632 51.653562,-0.564693 51.653490,-0.564635 51.653462,-0.564816 51.653270,-0.565097 51.653237,-0.565377 51.653028,-0.565588 51.652914,-0.565822 51.652816,-0.566020 51.652773,-0.566295 51.652752,-0.566596 51.652762,-0.566863 51.652721,-0.567075 51.652655,-0.567226 51.652580,-0.567328 51.652454,-0.567387 51.652319,-0.567456 51.652220,-0.567581 51.652134,-0.567741 51.652078,-0.567952 51.652022,-0.568014 51.652015,-0.568038 51.651673,-0.568046 51.651394,-0.568632 51.651183,-0.568938 51.650723,-0.568437 51.650493,-0.564630 51.650643,-0.564703 51.650686,-0.564459 51.652454,-0.564438 51.652518,-0.564402 51.652557,-0.563289 51.653281,-0.564493 51.653962,-0.564626 51.654034,-0.564641 51.654016)))
point: POINT (-0.566057 51.651842)
notes
organisation
entry-date: 2010-02-18
start-date: 2010-02-18
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.