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: TPO910
name: 2/1982
tree-preservation-order: undefined
2/1982
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.580522 51.257496,0.580419 51.257511,0.580383 51.257406,0.580336 51.257310,0.580248 51.257222,0.580124 51.257036,0.579890 51.256711,0.579840 51.256627,0.579740 51.256422,0.579699 51.256274,0.579657 51.255938,0.579606 51.255162,0.579584 51.255082,0.579543 51.254982,0.579492 51.254801,0.579775 51.254763,0.579810 51.254767,0.579854 51.254784,0.579902 51.255715,0.579953 51.256166,0.579969 51.256245,0.579989 51.256286,0.580092 51.256425,0.580309 51.256701,0.580475 51.256850,0.580508 51.256897,0.580635 51.257122,0.580790 51.257430,0.580522 51.257496)))
point: POINT (0.580022 51.256258)
notes: The Maidstone Borough Council Tree Preservation Order No.2 of 1982 under the provisions of Section 60 of the Town andCountry Planning Act 1971 Woodlands - W2 comprising Oak (Quercus robur),
organisation
entry-date: 1982-03-05
start-date: 1982-03-05
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.