Tree preservation zone

There is a problem

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

reference: TPO128
name: Station Road
tree-preservation-order: undefined
South Killingholme 1978
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-0.230678 53.647459,-0.230745 53.647488,-0.230807 53.647509,-0.230859 53.647496,-0.230911 53.647476,-0.230952 53.647450,-0.230972 53.647393,-0.230967 53.647376,-0.230912 53.647324,-0.230868 53.647279,-0.230778 53.647261,-0.230692 53.647273,-0.230633 53.647303,-0.230597 53.647363,-0.230556 53.647383,-0.230278 53.647474,-0.230103 53.647514,-0.229781 53.647593,-0.229604 53.647630,-0.229593 53.647635,-0.229582 53.647643,-0.229592 53.647657,-0.229607 53.647667,-0.229623 53.647675,-0.229637 53.647672,-0.229823 53.647628,-0.229842 53.647622,-0.230066 53.647566,-0.230226 53.647524,-0.230340 53.647493,-0.230517 53.647437,-0.230593 53.647438,-0.230633 53.647445,-0.230678 53.647459)))
point: POINT (-0.23051 53.647443)
notes
entry-date: 1978-07-19
start-date: 1978-04-06
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.