Tree preservation zone

There is a problem

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

reference: TPO064.A1
name: Within the Childwall Abbey Conservation Area.
tree-preservation-order: undefined
TPO064
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.880226 53.395031,-2.879586 53.395270,-2.879572 53.395311,-2.879671 53.395373,-2.879987 53.395678,-2.880967 53.395112,-2.881035 53.395152,-2.881603 53.395592,-2.881805 53.395499,-2.882170 53.395780,-2.882447 53.395655,-2.882814 53.395959,-2.883614 53.395620,-2.883531 53.395551,-2.883661 53.395501,-2.883289 53.395138,-2.883015 53.395221,-2.882859 53.395048,-2.883480 53.394869,-2.883681 53.394795,-2.883885 53.394701,-2.883897 53.394681,-2.883973 53.394649,-2.883994 53.394624,-2.883994 53.394603,-2.883972 53.394560,-2.883941 53.394565,-2.883797 53.394302,-2.883760 53.394209,-2.883701 53.394000,-2.883673 53.393937,-2.883642 53.393912,-2.883616 53.393907,-2.882053 53.394439,-2.881939 53.394497,-2.881817 53.394577,-2.881505 53.394831,-2.881246 53.394940,-2.880964 53.394739,-2.880925 53.394719,-2.880886 53.394716,-2.880226 53.395031)))
point: POINT (-2.882247 53.394999)
notes: The several tree of whatever species situated within area A1 on map.
organisation
entry-date: 1970-12-11
start-date: 1971-05-05
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.