Tree preservation zone

There is a problem

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

reference: TPO7359
name: Belt on South Side of Redbourne Park
tree-preservation-order: undefined
Redbourne 1949
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-0.534502 53.477059,-0.534214 53.477136,-0.533923 53.477209,-0.533624 53.477274,-0.533394 53.477322,-0.533119 53.477376,-0.531810 53.477611,-0.531434 53.477686,-0.531102 53.477736,-0.529082 53.478096,-0.527571 53.478363,-0.527283 53.478433,-0.527138 53.478470,-0.527072 53.478481,-0.527098 53.478550,-0.527190 53.478746,-0.527190 53.478761,-0.527196 53.478786,-0.527212 53.478823,-0.527237 53.478868,-0.531335 53.478141,-0.531636 53.478086,-0.531734 53.478104,-0.532097 53.478181,-0.532214 53.478200,-0.532386 53.478224,-0.532512 53.478234,-0.532641 53.478235,-0.532808 53.478215,-0.532945 53.478181,-0.533055 53.478132,-0.533189 53.478055,-0.533356 53.477954,-0.533480 53.477867,-0.533592 53.477783,-0.533698 53.477701,-0.533775 53.477623,-0.533859 53.477513,-0.534027 53.477349,-0.534252 53.477299,-0.534529 53.477225,-0.534588 53.477219,-0.534624 53.477207,-0.534502 53.477059)))
point: POINT (-0.5309 53.478029)
notes
entry-date: 1949-09-13
start-date: 1949-05-26
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.