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: TPO460
name: 4/1983
tree-preservation-order: undefined
4/1983
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.628483 51.270443,0.628189 51.270614,0.627898 51.270758,0.627634 51.270875,0.626884 51.271268,0.626716 51.271328,0.626488 51.271454,0.626169 51.271600,0.626113 51.271568,0.625877 51.271582,0.625613 51.271677,0.625389 51.271675,0.625338 51.271684,0.624723 51.271897,0.624432 51.271984,0.624298 51.271846,0.624292 51.271799,0.624271 51.271739,0.624190 51.271679,0.624106 51.271562,0.624084 51.271483,0.624066 51.271351,0.624035 51.271250,0.623935 51.271068,0.623745 51.270869,0.623706 51.270687,0.623695 51.270581,0.623700 51.270366,0.625462 51.270346,0.625547 51.270324,0.625798 51.270220,0.626257 51.270005,0.626478 51.269984,0.626797 51.269984,0.627049 51.270021,0.627222 51.270074,0.627553 51.270219,0.627787 51.270220,0.628007 51.270259,0.628167 51.270301,0.628233 51.270326,0.628483 51.270443)))
point: POINT (0.625785 51.27086)
notes: The Maidstone Borough Council Tree Preservation Order No.4 of 1983 under provisions of Section 60 & 61 of the Town and Country Planning Act 1971 Woodland - W3
organisation
entry-date: 1983-02-24
start-date: 1983-02-24
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.