Tree preservation zone

There is a problem

365 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: HWS1KADNBB000
name: Imperial Sports Ground (Area 2)
tree-preservation-order: undefined
669
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.556437 51.429682,-2.557171 51.429669,-2.557855 51.429604,-2.558212 51.429521,-2.558276 51.429429,-2.558440 51.429500,-2.559318 51.429271,-2.560308 51.428889,-2.561119 51.428529,-2.560511 51.428165,-2.560673 51.428123,-2.560934 51.428081,-2.560967 51.428091,-2.561177 51.427958,-2.561373 51.427977,-2.561453 51.427916,-2.561502 51.427864,-2.561811 51.427812,-2.562347 51.427646,-2.562932 51.427511,-2.562964 51.427460,-2.563095 51.427480,-2.563501 51.427386,-2.563679 51.427232,-2.563407 51.426357,-2.563306 51.426103,-2.563208 51.426083,-2.562344 51.426118,-2.561823 51.426120,-2.560583 51.426065,-2.559832 51.425997,-2.559344 51.426091,-2.559036 51.426245,-2.558663 51.426359,-2.558207 51.426402,-2.558035 51.427035,-2.557411 51.428027,-2.556595 51.429264,-2.556404 51.429672,-2.556437 51.429682)))
point: POINT (-2.559899 51.427629)
notes: ALL TREES WITHIN THE LINE
organisation
entry-date: 2004-04-26
start-date: 2004-04-26
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.