Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: tpo1468
name: Hedon North - 1976
tree-preservation-order: undefined
78
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.198627 53.742660,-0.198676 53.742468,-0.198506 53.742465,-0.198510 53.742365,-0.197861 53.742303,-0.197855 53.742208,-0.198371 53.742243,-0.198366 53.742102,-0.198250 53.742102,-0.198215 53.741991,-0.198193 53.741957,-0.198147 53.741937,-0.198073 53.741916,-0.198020 53.741916,-0.197927 53.741939,-0.197804 53.741920,-0.197625 53.741794,-0.197503 53.741965,-0.196855 53.742038,-0.196834 53.742056,-0.196897 53.742344,-0.197287 53.742353,-0.197271 53.742738,-0.197659 53.742747,-0.197674 53.742639,-0.197955 53.742640,-0.198627 53.742660)))
point: POINT (-0.197723 53.742308)
notes
entry-date: 1977-05-06
start-date: 1977-05-06
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.