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: TPO714
name: 18/1986
tree-preservation-order: undefined
18/1986
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.642265 51.293341,0.642233 51.293450,0.642234 51.293538,0.642224 51.293622,0.642234 51.293711,0.642228 51.293737,0.642192 51.293781,0.642082 51.293810,0.642020 51.293818,0.642004 51.293840,0.642022 51.293981,0.642058 51.294097,0.642161 51.294340,0.642226 51.294427,0.642293 51.294470,0.642455 51.294532,0.642572 51.294554,0.642843 51.294586,0.642817 51.294714,0.642566 51.294703,0.642355 51.294655,0.642165 51.294591,0.641831 51.294448,0.641773 51.294430,0.641669 51.294381,0.641660 51.294303,0.641496 51.294153,0.641407 51.294149,0.641236 51.294087,0.641168 51.294020,0.641125 51.293895,0.641165 51.293732,0.641249 51.293520,0.641374 51.293145,0.641371 51.293005,0.641569 51.292385,0.641578 51.292198,0.642211 51.292257,0.642189 51.292350,0.642216 51.292420,0.642274 51.292506,0.642376 51.292591,0.642519 51.292645,0.642604 51.292740,0.642619 51.292898,0.642583 51.293008,0.642532 51.293080,0.642524 51.293109,0.642385 51.293252,0.642299 51.293309,0.642265 51.293341)))
point: POINT (0.641874 51.293362)
notes: The Maidstone Borough Council Tree Preservation Order No 18 of 1986 under Section 60 of the Town and Country Planning Act 1971 Woodlands - W2 Mixed Deciduous trees consisting
organisation
entry-date: 1986-08-13
start-date: 1986-07-19
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.