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: ZZZZZTESRW820
name: South Bucks District Council Tree Preservation Order No.3; dated 3/2/2005. Confirmed 21/4/2005.
tree-preservation-order: undefined
TPO/SBDC/2005/03
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.544224 51.576035,-0.544193 51.576080,-0.544371 51.576105,-0.544618 51.576153,-0.545879 51.576432,-0.546341 51.576540,-0.546539 51.576596,-0.546925 51.576733,-0.547713 51.577057,-0.548158 51.577222,-0.549546 51.575263,-0.548317 51.574779,-0.548080 51.574723,-0.547940 51.574679,-0.546972 51.574131,-0.546879 51.573907,-0.546470 51.573782,-0.546426 51.573808,-0.546284 51.573856,-0.546170 51.573871,-0.546163 51.573935,-0.546043 51.574281,-0.546016 51.574409,-0.545901 51.575023,-0.545881 51.575283,-0.545841 51.575407,-0.545817 51.575456,-0.545766 51.575527,-0.545637 51.575619,-0.545222 51.575819,-0.545118 51.575886,-0.544881 51.576073,-0.544320 51.575906,-0.544224 51.576035)))
point: POINT (-0.547227 51.575598)
notes
organisation
entry-date: 2017-07-04
start-date: 2017-07-04
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.