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: IB84UZDNBB000
name: Land Off Hallen Road Adjacent To Moorgrove Wood Henbury Bristol
tree-preservation-order: undefined
406
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.637539 51.507525,-2.637801 51.507667,-2.637921 51.507715,-2.637933 51.507732,-2.638015 51.507761,-2.638055 51.507784,-2.638056 51.507791,-2.638101 51.507810,-2.638127 51.507812,-2.638203 51.507866,-2.638244 51.507873,-2.638356 51.507945,-2.638564 51.508030,-2.638587 51.508028,-2.638618 51.508001,-2.638611 51.507970,-2.638583 51.507944,-2.638487 51.507899,-2.638391 51.507842,-2.638307 51.507814,-2.638271 51.507786,-2.638095 51.507702,-2.637808 51.507535,-2.637682 51.507486,-2.637623 51.507451,-2.637567 51.507432,-2.637527 51.507431,-2.637513 51.507438,-2.637499 51.507451,-2.637496 51.507480,-2.637539 51.507525)))
point: POINT (-2.63804 51.507723)
notes: ENGLISH ELM - Ulmus procera, OAK - Quercus robur,WYCH ELM - Ulmus glabra,HAWTHORN - Crataegus monogyna,ASH - Fraxinus excelsior,FIELD MAPLE - Acer campestre
organisation
entry-date: 2005-02-01
start-date: 2005-02-01
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.