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: ZZZZZTESRW175
name: South Bucks Council (No. 10) Tree Preservation Order 1991; dated 4/6/91; made under Sections 198;199
tree-preservation-order: undefined
TPO/SBDC/1991/10
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.647136 51.602190,-0.647100 51.602133,-0.647063 51.602124,-0.646859 51.602131,-0.646757 51.602149,-0.646683 51.602178,-0.646566 51.602253,-0.646541 51.602261,-0.646477 51.602258,-0.646416 51.602231,-0.646338 51.602216,-0.646233 51.602217,-0.646158 51.602239,-0.646065 51.602311,-0.645595 51.602432,-0.645451 51.602465,-0.645340 51.602479,-0.645135 51.602461,-0.644661 51.602363,-0.645015 51.602586,-0.645214 51.602726,-0.645384 51.602869,-0.645416 51.602876,-0.645460 51.602860,-0.645460 51.602821,-0.645443 51.602791,-0.645319 51.602646,-0.645321 51.602624,-0.645359 51.602594,-0.645487 51.602563,-0.645646 51.602565,-0.645727 51.602557,-0.646100 51.602417,-0.646180 51.602401,-0.646334 51.602393,-0.646646 51.602412,-0.646924 51.602395,-0.647057 51.602376,-0.647067 51.602366,-0.647061 51.602324,-0.647075 51.602290,-0.647110 51.602265,-0.647169 51.602251,-0.647136 51.602190)))
point: POINT (-0.646023 51.602412)
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.