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: ZZZZDVESXE700
name: The Bucks County Council (Amersham Rural District) Tree Preservation Order No 6 - 1952 Confirmed by
tree-preservation-order: undefined
TPO/1952/006
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.577192 51.610187,-0.577065 51.609974,-0.576943 51.609765,-0.576830 51.609579,-0.576652 51.609277,-0.576555 51.609133,-0.576434 51.608941,-0.576254 51.608998,-0.575975 51.609082,-0.575651 51.609183,-0.575655 51.609191,-0.575673 51.609283,-0.575728 51.609636,-0.575832 51.610415,-0.575976 51.610429,-0.576065 51.610435,-0.576211 51.610440,-0.576293 51.610441,-0.576538 51.610438,-0.576696 51.610438,-0.576711 51.610435,-0.576732 51.610426,-0.576770 51.610404,-0.576777 51.610396,-0.576780 51.610385,-0.576830 51.610370,-0.576847 51.610376,-0.576864 51.610377,-0.576883 51.610376,-0.576908 51.610372,-0.576931 51.610366,-0.576978 51.610344,-0.577016 51.610322,-0.577052 51.610298,-0.577192 51.610187)))
point: POINT (-0.576335 51.609782)
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.