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: TPO643
name: 22/1987
tree-preservation-order: undefined
22/1987
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((0.640851 51.298034,0.640643 51.298105,0.640258 51.298215,0.639977 51.298283,0.639508 51.298382,0.639455 51.298391,0.639398 51.298323,0.640119 51.298104,0.640090 51.297969,0.640097 51.297927,0.640117 51.297895,0.640183 51.297831,0.640335 51.297731,0.640454 51.297672,0.640569 51.297633,0.640614 51.297714,0.640741 51.297868,0.640851 51.298034)))
point: POINT (0.640288 51.298023)
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 - G10 - 13 Oak, 1 Ash
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.