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: TPO524
name: 19/1987
tree-preservation-order: undefined
19/1987
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.644117 51.268618,0.644419 51.268885,0.644607 51.269022,0.644835 51.269153,0.645033 51.269243,0.645230 51.269323,0.645993 51.269584,0.646443 51.269709,0.647137 51.269882,0.647384 51.269960,0.648238 51.270299,0.648859 51.270579,0.649453 51.270881,0.649443 51.270888,0.649675 51.271004,0.649790 51.271104,0.649844 51.271203,0.649933 51.271301,0.649912 51.271314,0.649865 51.271319,0.649806 51.271314,0.649730 51.271294,0.649576 51.271224,0.649316 51.271072,0.648972 51.270948,0.648862 51.270883,0.648739 51.270778,0.648642 51.270712,0.648019 51.270418,0.647034 51.270035,0.646820 51.269968,0.646191 51.269802,0.645834 51.269694,0.645722 51.269628,0.645619 51.269608,0.645467 51.269562,0.645192 51.269458,0.644926 51.269368,0.644745 51.269297,0.644521 51.269182,0.644407 51.269110,0.644224 51.268960,0.644098 51.268929,0.643976 51.268916,0.643842 51.268871,0.643757 51.268820,0.643701 51.268769,0.643675 51.268738,0.643654 51.268694,0.643644 51.268616,0.643656 51.268261,0.643674 51.268255,0.643722 51.268279,0.644117 51.268618)))
point: POINT (0.646701 51.269863)
notes: The Maidstone Borough Council Tree Preservation Order No 19 of 1987 under Section 60 of the Town and Country Planning Act 1971 Woodlands - W9 Mixed Deciduous and Conifers consisting
organisation
entry-date: 1987-08-11
start-date: 1987-08-05
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.