Tree preservation zone

There is a problem

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

reference: TPO236.A1
name: No info.
tree-preservation-order: undefined
TPO236
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.920290 53.363592,-2.919928 53.363836,-2.919894 53.363852,-2.919774 53.363933,-2.919700 53.363979,-2.919674 53.363997,-2.920707 53.364506,-2.920997 53.364274,-2.921039 53.364242,-2.921399 53.363995,-2.921396 53.363994,-2.921467 53.363939,-2.921216 53.363797,-2.921224 53.363790,-2.921142 53.363745,-2.921139 53.363741,-2.921140 53.363735,-2.921013 53.363662,-2.920965 53.363636,-2.920945 53.363649,-2.920537 53.363429,-2.920290 53.363592)))
point: POINT (-2.92059 53.363965)
notes: The several tree of whatever species situated within area A1 on map.
entry-date: 1990-10-26
start-date: 1991-02-11
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.