Tree preservation zone

There is a problem

tree-preservation-order column must match the reference field in the tree preservation order dataset

reference: TPO184.A1
name: Within the grounds of Parklands and the adjoining land.
tree-preservation-order: undefined
TPO184
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.893127 53.375239,-2.893083 53.375161,-2.893043 53.375095,-2.892640 53.375164,-2.892559 53.375176,-2.892251 53.375228,-2.892051 53.375263,-2.892016 53.375267,-2.891591 53.375340,-2.892080 53.375990,-2.892160 53.375969,-2.892372 53.375908,-2.892663 53.375874,-2.892941 53.375831,-2.892956 53.375835,-2.892963 53.375843,-2.893515 53.375767,-2.893488 53.375736,-2.893471 53.375719,-2.893437 53.375674,-2.893422 53.375677,-2.893411 53.375675,-2.893384 53.375644,-2.893391 53.375635,-2.893403 53.375631,-2.893320 53.375522,-2.893212 53.375371,-2.893190 53.375366,-2.893153 53.375267,-2.893127 53.375239)))
point: POINT (-2.892549 53.375539)
notes: The several tree of whatever species situated within area A1 on map.
entry-date: 1981-04-03
start-date: 1981-08-05
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.