Tree preservation zone

There is a problem

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

reference: TPO125.A1
name: Standing within the area numbered A1 on the map.
tree-preservation-order: undefined
TPO125
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.964291 53.444252,-2.964201 53.444192,-2.964141 53.444166,-2.963901 53.444461,-2.963842 53.444449,-2.963640 53.444727,-2.963525 53.444850,-2.963419 53.445000,-2.963324 53.445154,-2.963258 53.445244,-2.963257 53.445254,-2.963266 53.445253,-2.963270 53.445288,-2.964116 53.445234,-2.964135 53.445213,-2.964182 53.445214,-2.964189 53.445233,-2.964356 53.445226,-2.964607 53.445232,-2.964609 53.445177,-2.964644 53.445157,-2.964683 53.445152,-2.964890 53.444642,-2.964935 53.444597,-2.964889 53.444537,-2.964815 53.444487,-2.964670 53.444426,-2.964431 53.444347,-2.964412 53.444322,-2.964291 53.444252)))
point: POINT (-2.964154 53.444817)
notes: The several tree of whatever species situated within area A1 on map.
organisation
entry-date: 1973-08-23
start-date: 1974-02-06
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.