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: ZZZZDVESXE686
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 (((-0.564344 51.650460,-0.564649 51.650654,-0.568318 51.650507,-0.568245 51.648024,-0.567587 51.647919,-0.566909 51.647804,-0.566274 51.647703,-0.566195 51.647818,-0.566118 51.647926,-0.566022 51.648051,-0.565971 51.648112,-0.565940 51.648142,-0.565879 51.648194,-0.565764 51.648283,-0.565711 51.648320,-0.565567 51.648408,-0.565529 51.648435,-0.565478 51.648473,-0.565289 51.648623,-0.565170 51.648713,-0.565027 51.648818,-0.564950 51.648870,-0.564740 51.649001,-0.564586 51.649092,-0.564508 51.649136,-0.564426 51.649176,-0.564380 51.649195,-0.564215 51.649255,-0.563769 51.649404,-0.563495 51.649491,-0.563423 51.649516,-0.563391 51.649526,-0.563333 51.649540,-0.563270 51.649551,-0.563192 51.649559,-0.563137 51.649560,-0.563059 51.649552,-0.562917 51.649532,-0.562800 51.649517,-0.562740 51.649511,-0.562897 51.649602,-0.563851 51.650170,-0.564344 51.650460)))
point: POINT (-0.566256 51.649392)
notes
entry-date: 2010-02-18
start-date: 2010-02-18
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.