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: ZZZZZSESRW638
name: South Bucks District Council (No. 35) Tree Preservation Order 1995; dated 31/5/95; made under Sectio
tree-preservation-order: undefined
TPO/SBDC/2001/05
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.544568 51.584148,-0.544564 51.584139,-0.544555 51.584132,-0.544535 51.584122,-0.544485 51.584116,-0.544461 51.584117,-0.544432 51.584125,-0.544278 51.584157,-0.544184 51.584167,-0.544057 51.584184,-0.543842 51.584226,-0.543785 51.584244,-0.543760 51.584256,-0.543750 51.584277,-0.543752 51.584290,-0.543757 51.584303,-0.543774 51.584318,-0.543791 51.584330,-0.543825 51.584337,-0.543868 51.584337,-0.543934 51.584330,-0.543977 51.584322,-0.544036 51.584294,-0.544058 51.584286,-0.544087 51.584281,-0.544108 51.584279,-0.544196 51.584283,-0.544240 51.584281,-0.544311 51.584268,-0.544373 51.584253,-0.544505 51.584209,-0.544550 51.584189,-0.544564 51.584179,-0.544569 51.584164,-0.544568 51.584148)))
point: POINT (-0.544156 51.584228)
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.