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: ZZZZDUESXE370
name: The Chiltern District Council (Land at Holtspur Bottom Farm, Holtspur, Beaconsfield) Tree Preservati
tree-preservation-order: undefined
TPO/1990/009
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.666736 51.614178,-0.666762 51.614181,-0.666802 51.614183,-0.666854 51.614182,-0.666900 51.614179,-0.666931 51.614174,-0.666968 51.614163,-0.666985 51.614155,-0.667001 51.614142,-0.667013 51.614127,-0.667019 51.614112,-0.667021 51.614096,-0.667019 51.614084,-0.667010 51.614061,-0.667001 51.614048,-0.666975 51.614029,-0.666928 51.614010,-0.666895 51.614000,-0.666863 51.613992,-0.666823 51.613986,-0.666795 51.613983,-0.666747 51.613981,-0.666702 51.613981,-0.666655 51.613987,-0.666617 51.613997,-0.666586 51.614008,-0.666568 51.614020,-0.666550 51.614045,-0.666546 51.614057,-0.666546 51.614077,-0.666552 51.614093,-0.666565 51.614106,-0.666586 51.614123,-0.666613 51.614138,-0.666641 51.614151,-0.666693 51.614168,-0.666736 51.614178)))
point: POINT (-0.666785 51.614082)
notes
entry-date: 2010-02-18
start-date: 2010-02-18
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.