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: ZZZZZRESRW934
name: The Bucks. County Council (Borough of Slough and Eton Rural District) Tree Preservation Order No.3;
tree-preservation-order: undefined
TPO/BCC/1951/03
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.646805 51.542557,-0.646814 51.542551,-0.646821 51.542540,-0.646825 51.542529,-0.646828 51.542514,-0.646826 51.542490,-0.646819 51.542469,-0.646820 51.542432,-0.646828 51.542405,-0.646849 51.542365,-0.646866 51.542342,-0.646896 51.542307,-0.646976 51.542228,-0.647080 51.542120,-0.647085 51.542104,-0.647089 51.542098,-0.647090 51.542091,-0.647089 51.542083,-0.647083 51.542067,-0.647064 51.542043,-0.647035 51.542025,-0.646995 51.542012,-0.646951 51.542009,-0.646921 51.542009,-0.646867 51.542019,-0.646837 51.542027,-0.646814 51.542036,-0.646776 51.542055,-0.646743 51.542078,-0.646597 51.542213,-0.646547 51.542263,-0.646518 51.542295,-0.646466 51.542357,-0.646454 51.542374,-0.646449 51.542391,-0.646449 51.542401,-0.646451 51.542408,-0.646450 51.542416,-0.646452 51.542425,-0.646467 51.542463,-0.646484 51.542486,-0.646508 51.542510,-0.646537 51.542532,-0.646572 51.542553,-0.646601 51.542564,-0.646617 51.542568,-0.646645 51.542573,-0.646683 51.542576,-0.646723 51.542576,-0.646743 51.542573,-0.646773 51.542568,-0.646795 51.542562,-0.646805 51.542557)))
point: POINT (-0.646752 51.542291)
notes
entry-date: 2017-07-04
start-date: 2017-07-04
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.