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: ZZZZDVESXE735
name: The Bucks County Council (Amersham Rural District) Tree Preservation Order No 8 - 1949 Confirmed by
tree-preservation-order: undefined
TPO/1949/008
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.561828 51.652082,-0.561904 51.652264,-0.561642 51.652327,-0.561618 51.652337,-0.561476 51.652413,-0.561363 51.652469,-0.561311 51.652493,-0.563644 51.652541,-0.564421 51.652563,-0.564436 51.652550,-0.564458 51.652513,-0.564472 51.652461,-0.564571 51.651771,-0.564717 51.650693,-0.564344 51.650460,-0.563584 51.650012,-0.562744 51.649511,-0.562463 51.649473,-0.561634 51.649343,-0.561244 51.649285,-0.560725 51.649200,-0.560162 51.649113,-0.560062 51.649100,-0.560059 51.649112,-0.559927 51.649101,-0.559561 51.649116,-0.559627 51.649648,-0.559665 51.650000,-0.559758 51.650226,-0.559763 51.650225,-0.559763 51.650233,-0.559751 51.650315,-0.559749 51.650348,-0.559755 51.650387,-0.559761 51.650475,-0.559654 51.650480,-0.559787 51.651259,-0.558181 51.651270,-0.557729 51.651282,-0.557715 51.651395,-0.557710 51.651455,-0.557685 51.651670,-0.557682 51.651742,-0.559978 51.651756,-0.560527 51.651757,-0.561197 51.651762,-0.561492 51.651762,-0.561752 51.651899,-0.561828 51.652082)))
point: POINT (-0.56186 51.650917)
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.