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: TPO612
name: 10/1983
tree-preservation-order: undefined
10/1983
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.610085 51.268867,0.609615 51.269181,0.609338 51.269345,0.609203 51.269464,0.609067 51.269558,0.608872 51.269658,0.608642 51.269801,0.608250 51.269973,0.608021 51.269719,0.608032 51.269717,0.607966 51.269646,0.607704 51.269450,0.607410 51.269205,0.607345 51.269200,0.607235 51.269238,0.607085 51.269267,0.606982 51.269282,0.606877 51.269287,0.606808 51.269278,0.606786 51.269246,0.606776 51.269192,0.607387 51.269059,0.608014 51.268895,0.608741 51.268735,0.609334 51.268610,0.609919 51.268515,0.610085 51.268867)))
point: POINT (0.608653 51.26917)
notes: The Maidstone Borough Council Tree Preservation Order No.10 of 1983 under provisions of Section 60 & 61 of the Town and Country Planning Act 1971 Woodlands - W2 - Mixed
organisation
entry-date: 1983-04-08
start-date: 1983-03-31
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.