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: ZZZZZXESRW019
name: South Bucks District Council (No. 17) Tree Preservation Order 1994; dated 25/10/94; made under Secti
tree-preservation-order: undefined
TPO/SBDC/1994/17
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.491496 51.581272,-0.492021 51.581003,-0.492045 51.580955,-0.492038 51.580921,-0.491995 51.580878,-0.491950 51.580859,-0.491869 51.580851,-0.491793 51.580868,-0.491361 51.581107,-0.491299 51.581152,-0.491283 51.581179,-0.491282 51.581208,-0.491296 51.581236,-0.491341 51.581268,-0.491406 51.581284,-0.491453 51.581283,-0.491496 51.581272)),((-0.492686 51.580933,-0.492788 51.580951,-0.492868 51.580926,-0.492929 51.580871,-0.492941 51.580826,-0.492928 51.580782,-0.492891 51.580743,-0.492813 51.580709,-0.492733 51.580693,-0.492623 51.580689,-0.492367 51.580698,-0.492304 51.580724,-0.492271 51.580767,-0.492296 51.580808,-0.492349 51.580837,-0.492419 51.580847,-0.492521 51.580843,-0.492552 51.580852,-0.492686 51.580933)))
point: POINT (-0.492079 51.580952)
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.