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: ZZZZZTESRW188
name: South Bucks Council (No. 12) Tree Preservation Order 1992; dated 10/11/92; made under Sections 198;
tree-preservation-order: undefined
TPO/SBDC/1992/12
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.494718 51.577833,-0.495338 51.578061,-0.495540 51.578127,-0.496253 51.578319,-0.496627 51.578368,-0.496686 51.578350,-0.496724 51.578321,-0.496748 51.578294,-0.496765 51.578258,-0.496769 51.578206,-0.496762 51.578181,-0.496713 51.578125,-0.496484 51.578055,-0.495432 51.577791,-0.495207 51.577729,-0.495044 51.577670,-0.494845 51.577580,-0.494447 51.577383,-0.494068 51.577163,-0.493846 51.577015,-0.493628 51.576834,-0.493404 51.576620,-0.493199 51.576353,-0.493061 51.576192,-0.492812 51.575823,-0.492645 51.575449,-0.492457 51.574970,-0.492397 51.574788,-0.492347 51.574737,-0.492245 51.574708,-0.492135 51.574710,-0.492051 51.574739,-0.492016 51.574766,-0.492000 51.574783,-0.491996 51.574830,-0.492058 51.575055,-0.492248 51.575560,-0.492355 51.575796,-0.492559 51.576136,-0.492780 51.576438,-0.493045 51.576760,-0.493256 51.576963,-0.493493 51.577144,-0.493716 51.577300,-0.494036 51.577498,-0.494466 51.577735,-0.494718 51.577833)))
point: POINT (-0.493892 51.576817)
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.