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: ZZZZZTESRW108
name: South Bucks District Council (No.20) Tree Preservation Order 1995; dated 31/5/95; made under Section
tree-preservation-order: undefined
TPO/SBDC/1995/20
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.657254 51.600584,-0.656767 51.601596,-0.656492 51.602133,-0.656360 51.602426,-0.656291 51.602547,-0.656129 51.602872,-0.656156 51.602879,-0.656567 51.603101,-0.656068 51.603374,-0.656036 51.603352,-0.655814 51.603519,-0.656570 51.604051,-0.656651 51.604059,-0.657088 51.603694,-0.657343 51.603465,-0.657374 51.603435,-0.657368 51.603417,-0.657396 51.603393,-0.657417 51.603393,-0.657513 51.603296,-0.657648 51.603149,-0.657657 51.603135,-0.657651 51.603120,-0.657672 51.603093,-0.657698 51.603086,-0.657742 51.603033,-0.657823 51.602921,-0.657823 51.602895,-0.657843 51.602825,-0.657816 51.602703,-0.657781 51.602606,-0.657661 51.602369,-0.657615 51.602296,-0.657539 51.602123,-0.657494 51.601930,-0.657490 51.601819,-0.657502 51.601739,-0.657597 51.601539,-0.657617 51.601532,-0.657702 51.601379,-0.657840 51.601163,-0.657839 51.601145,-0.657823 51.601134,-0.657836 51.601104,-0.657867 51.601094,-0.658067 51.600727,-0.657254 51.600584)))
point: POINT (-0.657033 51.602428)
notes
organisation
entry-date: 2017-07-04
start-date: 2017-07-04
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.