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: ZZZZZSESRW355
name: South Bucks District Council (No.3) Tree Preservation Order; 1986; dated 17/10/86; made under Ss.60
tree-preservation-order: undefined
TPO/SBDC/1986/03
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.651206 51.551763,-0.653373 51.551922,-0.653365 51.551858,-0.653330 51.551722,-0.653278 51.551591,-0.653174 51.551441,-0.653014 51.551243,-0.652986 51.551202,-0.652952 51.551127,-0.652855 51.550605,-0.652863 51.550504,-0.652855 51.550470,-0.652786 51.550365,-0.652728 51.550243,-0.652612 51.550104,-0.652604 51.550019,-0.652563 51.549940,-0.652531 51.549855,-0.652460 51.549633,-0.652337 51.549607,-0.652079 51.549842,-0.652021 51.549902,-0.651986 51.549952,-0.651945 51.550064,-0.651900 51.550124,-0.651861 51.550210,-0.651777 51.550466,-0.651714 51.550595,-0.651635 51.550733,-0.651467 51.550990,-0.651296 51.551216,-0.651270 51.551267,-0.651245 51.551335,-0.651211 51.551484,-0.651169 51.551756,-0.651206 51.551763)))
point: POINT (-0.652256 51.551029)
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.