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: TPO372
name: 6/1983
tree-preservation-order: undefined
6/1983
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.617165 51.274574,0.617361 51.274580,0.617458 51.274594,0.617590 51.274574,0.617755 51.274579,0.617868 51.274572,0.617928 51.274705,0.618075 51.274990,0.618180 51.275291,0.617930 51.275316,0.617077 51.275461,0.616825 51.275496,0.616718 51.275500,0.616598 51.275521,0.616590 51.275516,0.616497 51.275396,0.616462 51.275323,0.616393 51.275035,0.616321 51.274670,0.616538 51.274627,0.617165 51.274574)))
point: POINT (0.617199 51.275012)
notes: Maidstone Borough Council Tree Preservation Order No 6 of 1983 as varied by the Maidstone Borough Council Tree Preservation Order No.18 of 1988 made under Section 60 of the Town and Country Planning Act 1971
organisation
entry-date: 1988-11-05
start-date: 1988-10-14
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.