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: ZZZZZVESRW254
name: South Bucks District Council (No.9) Tree Preservation Order 2000; dated 4/8/2000. Confirmed 18/4/200
tree-preservation-order: undefined
TPO/SBDC/2000/09
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.634747 51.615954,-0.634751 51.615961,-0.634757 51.615967,-0.634777 51.615983,-0.634799 51.615991,-0.634813 51.615995,-0.634833 51.615998,-0.634857 51.615999,-0.634881 51.615997,-0.634912 51.615991,-0.634942 51.615983,-0.634990 51.615965,-0.635015 51.615946,-0.635028 51.615931,-0.635034 51.615914,-0.635031 51.615901,-0.635013 51.615872,-0.635004 51.615848,-0.634999 51.615825,-0.634993 51.615807,-0.634984 51.615789,-0.634973 51.615778,-0.634961 51.615770,-0.634943 51.615763,-0.634928 51.615760,-0.634836 51.615754,-0.634758 51.615744,-0.634739 51.615744,-0.634723 51.615747,-0.634705 51.615755,-0.634699 51.615761,-0.634696 51.615768,-0.634695 51.615777,-0.634696 51.615788,-0.634700 51.615800,-0.634713 51.615824,-0.634725 51.615863,-0.634747 51.615954)))
point: POINT (-0.634861 51.615869)
notes
entry-date: 2017-07-04
start-date: 2017-07-04
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.