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: 1/77/53-590
name: 8 Individual, 5 Areas
tree-preservation-order: undefined
1/77/53-590
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((0.210436 51.857397,0.210435 51.857409,0.210439 51.857449,0.210438 51.857466,0.210440 51.857506,0.210443 51.857544,0.210449 51.857576,0.210484 51.857695,0.210528 51.857810,0.210561 51.857872,0.210586 51.857913,0.210663 51.858022,0.210762 51.858152,0.210880 51.858295,0.210913 51.858331,0.211054 51.858471,0.211130 51.858540,0.211194 51.858602,0.211174 51.858606,0.211129 51.858610,0.211091 51.858611,0.211034 51.858608,0.209749 51.858467,0.209553 51.858442,0.209564 51.858377,0.209591 51.858305,0.209657 51.858216,0.209740 51.858138,0.209820 51.858073,0.209871 51.858022,0.209952 51.857907,0.209998 51.857819,0.210107 51.857625,0.210160 51.857516,0.210178 51.857493,0.210233 51.857443,0.210273 51.857422,0.210335 51.857404,0.210436 51.857395,0.210436 51.857397)))
point: POINT (0.210311 51.858146)
notes
entry-date: 1978-04-11
start-date: 1978-04-11
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.