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: ZZZZZSESRW239
name: South Bucks District Council (No. 13) Tree Preservation Order 1990; dated 8/10/90; made under Sectio
tree-preservation-order: undefined
TPO/SBDC/1990/13
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.587154 51.538933,-0.587167 51.538943,-0.587183 51.538952,-0.587201 51.538959,-0.587220 51.538964,-0.587262 51.538968,-0.587283 51.538966,-0.587303 51.538962,-0.587322 51.538957,-0.587339 51.538949,-0.587366 51.538929,-0.587375 51.538917,-0.587381 51.538904,-0.587383 51.538891,-0.587382 51.538878,-0.587377 51.538865,-0.587368 51.538853,-0.587357 51.538842,-0.587342 51.538832,-0.587306 51.538814,-0.587284 51.538806,-0.587260 51.538800,-0.587210 51.538796,-0.587184 51.538798,-0.587160 51.538802,-0.587137 51.538809,-0.587116 51.538818,-0.587106 51.538829,-0.587100 51.538841,-0.587096 51.538854,-0.587096 51.538867,-0.587098 51.538879,-0.587104 51.538892,-0.587154 51.538933)))
point: POINT (-0.58724 51.53888)
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.