Tree preservation zone

There is a problem

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

reference: 8/GOD W8
name: On the south side of Southlands Lane in the parish of Tandridge
tree-preservation-order: undefined
8/GOD
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.020389 51.235210,-0.021069 51.235104,-0.021697 51.234958,-0.023022 51.234707,-0.023485 51.234585,-0.023506 51.234520,-0.023364 51.234426,-0.023194 51.234124,-0.023055 51.233940,-0.023065 51.233718,-0.023003 51.233444,-0.022885 51.233233,-0.022819 51.233077,-0.022604 51.232791,-0.022402 51.232561,-0.022192 51.232349,-0.021891 51.232123,-0.021536 51.231882,-0.021068 51.231705,-0.020562 51.231579,-0.020053 51.231532,-0.020239 51.231873,-0.020301 51.232135,-0.020300 51.232578,-0.020374 51.232970,-0.020359 51.233334,-0.020384 51.233608,-0.020415 51.233725,-0.020353 51.233894,-0.020403 51.233999,-0.020398 51.234116,-0.020227 51.234282,-0.020181 51.234503,-0.020247 51.234660,-0.020225 51.234738,-0.020235 51.234959,-0.020337 51.235131,-0.020355 51.235131,-0.020389 51.235210)))
point: POINT (-0.02152 51.233525)
notes
organisation
entry-date: 1951-04-20
start-date: 1951-04-20
end-date

Your dataset is missing the tree-preservation-order column.

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

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