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: TPO802
name: 13/1986
tree-preservation-order: undefined
13/1986
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.650413 51.270968,0.650453 51.271024,0.650520 51.271076,0.651075 51.271406,0.650797 51.271601,0.650758 51.271639,0.650719 51.271709,0.650534 51.271660,0.650422 51.271597,0.650295 51.271501,0.650026 51.271247,0.649872 51.271062,0.649818 51.271021,0.649640 51.270920,0.649643 51.270910,0.649131 51.270644,0.649151 51.270588,0.649146 51.270586,0.649433 51.270363,0.649810 51.270549,0.649995 51.270658,0.650350 51.270901,0.650391 51.270937,0.650413 51.270968)))
point: POINT (0.650116 51.271038)
notes: Maidstone Borough Council Tree Preservation Order No 13 of 1986 under Section 60 of the Town and Country Planning Act 1971 Woodlands - W3 Comprising : Mixed conifers and deciduous
organisation
entry-date: 1986-08-13
start-date: 1986-07-18
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.