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: ZZZZZSESRW598
name: Bucks County Council (Eton Rural District) Tree Preservation Order No. 3; 1950; dated 12/1/50 under
tree-preservation-order: undefined
TPO/BCC/1950/03
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.569140 51.563296,-0.569197 51.563224,-0.569230 51.563159,-0.569239 51.563088,-0.569219 51.563031,-0.569188 51.563011,-0.569119 51.562993,-0.568884 51.562976,-0.568752 51.562987,-0.568690 51.563004,-0.568503 51.563083,-0.568410 51.563153,-0.568416 51.563186,-0.568479 51.563261,-0.568652 51.563440,-0.568691 51.563466,-0.568776 51.563455,-0.568925 51.563406,-0.569053 51.563350,-0.569140 51.563296),(-0.568757 51.563329,-0.568691 51.563337,-0.568657 51.563328,-0.568647 51.563319,-0.568637 51.563275,-0.568573 51.563244,-0.568531 51.563197,-0.568512 51.563159,-0.568517 51.563134,-0.568529 51.563127,-0.568714 51.563124,-0.568960 51.563100,-0.569016 51.563116,-0.569044 51.563144,-0.569049 51.563175,-0.569032 51.563195,-0.568902 51.563240,-0.568757 51.563329)))
point: POINT (-0.568864 51.563193)
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.