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: ZZZZZVESRW897
name: South Bucks District Council (No. 5) Tree Preservation Order 1997; dated 24/6/97; made under Section
tree-preservation-order: undefined
TPO/SBDC/1997/05
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.613783 51.556745,-0.614165 51.556744,-0.614207 51.556740,-0.614244 51.556727,-0.614259 51.556718,-0.614272 51.556707,-0.614281 51.556695,-0.614287 51.556683,-0.614290 51.556670,-0.614289 51.556656,-0.614284 51.556643,-0.614276 51.556631,-0.614265 51.556620,-0.614250 51.556610,-0.614234 51.556602,-0.614215 51.556596,-0.614195 51.556592,-0.614174 51.556590,-0.613790 51.556590,-0.613768 51.556586,-0.613746 51.556585,-0.613724 51.556586,-0.613702 51.556589,-0.613682 51.556595,-0.613663 51.556603,-0.613647 51.556612,-0.613634 51.556624,-0.613624 51.556636,-0.613617 51.556649,-0.613614 51.556663,-0.613615 51.556677,-0.613620 51.556691,-0.613629 51.556704,-0.613641 51.556716,-0.613656 51.556726,-0.613673 51.556734,-0.613693 51.556741,-0.613736 51.556748,-0.613783 51.556745)))
point: POINT (-0.61395 51.556667)
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.