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: TPO585
name: 22/1987
tree-preservation-order: undefined
22/1987
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((0.651651 51.288348,0.651556 51.288327,0.651471 51.288292,0.651439 51.288268,0.651432 51.288234,0.651461 51.288190,0.651589 51.288051,0.651628 51.287993,0.651680 51.287950,0.651738 51.287845,0.651805 51.287785,0.651875 51.287768,0.651960 51.287765,0.652037 51.287789,0.652054 51.287814,0.651923 51.288021,0.651790 51.288192,0.651651 51.288348)))
point: POINT (0.651741 51.28805)
notes: The Maidstone Borough Council Tree Preservation Order No 22 of 1987 under Section 60 of the Town and Country Planning Act 1971 Group of Trees - G3 - 19 Ash, 18 Beech, 15 Field Maple,
organisation
entry-date: 1987-07-31
start-date: 1987-07-24
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.