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: 1/76/61-182
name: 16 Individual 3 Areas
tree-preservation-order: undefined
1/76/61-182
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((0.408830 51.894671,0.408763 51.894675,0.408670 51.894672,0.408661 51.894674,0.408639 51.894674,0.408625 51.894671,0.408286 51.894489,0.408253 51.894473,0.408194 51.894451,0.408054 51.894440,0.407925 51.894426,0.407808 51.894399,0.407678 51.894380,0.407473 51.894338,0.407419 51.894323,0.407368 51.894306,0.407332 51.894290,0.407294 51.894270,0.407253 51.894244,0.407235 51.894230,0.407161 51.894159,0.407131 51.894123,0.407067 51.894042,0.407039 51.893998,0.407039 51.893993,0.407045 51.893982,0.407053 51.893975,0.407065 51.893969,0.407075 51.893966,0.407178 51.893952,0.407189 51.893974,0.407239 51.894047,0.407284 51.894092,0.407316 51.894119,0.407377 51.894163,0.407494 51.894207,0.407723 51.894283,0.407721 51.894285,0.407741 51.894291,0.407806 51.894306,0.407999 51.894330,0.408084 51.894338,0.408157 51.894317,0.408355 51.894219,0.408401 51.894224,0.408426 51.894229,0.408888 51.894520,0.408898 51.894529,0.408910 51.894547,0.408915 51.894558,0.408918 51.894570,0.408918 51.894592,0.408912 51.894611,0.408885 51.894652,0.408830 51.894671)))
point: POINT (0.408113 51.894371)
notes
entry-date: 1976-10-26
start-date: 1976-10-26
end-date

Your data is missing a tree-preservation-order.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.