Tree preservation zone

There is a problem

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

reference: 128/TAN A1
name: Copse fronting Rabies Heath Road Bletchingley
tree-preservation-order: undefined
128/TAN
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.086872 51.238638,-0.086880 51.238588,-0.086856 51.238488,-0.086753 51.238411,-0.086522 51.238212,-0.086433 51.237960,-0.086217 51.237523,-0.085985 51.237207,-0.085712 51.236915,-0.085509 51.236687,-0.085487 51.236653,-0.085345 51.236534,-0.085217 51.236394,-0.085071 51.236254,-0.085012 51.236237,-0.084949 51.236240,-0.085431 51.236651,-0.085521 51.236774,-0.085543 51.236831,-0.085543 51.236862,-0.085750 51.237120,-0.085742 51.237136,-0.085761 51.237269,-0.085836 51.237382,-0.085945 51.237421,-0.086048 51.237442,-0.086118 51.237513,-0.086277 51.237778,-0.086347 51.237921,-0.086397 51.237968,-0.086397 51.238126,-0.086341 51.238217,-0.086286 51.238278,-0.085985 51.238328,-0.085532 51.238387,-0.085482 51.238481,-0.085465 51.238594,-0.085424 51.238739,-0.085622 51.238759,-0.085740 51.238736,-0.086063 51.238700,-0.086214 51.238672,-0.086872 51.238638)))
point: POINT (-0.086061 51.238126)
notes
organisation
entry-date: 1984-05-10
start-date: 1984-05-10
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.