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: ZZZZZVESRW759
name: South Bucks District Council (No.4) Tree Preservation Order 2000; dated 5/4/2000; made under Section
tree-preservation-order: undefined
TPO/SBDC/2000/04
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.609006 51.564839,-0.609016 51.564830,-0.609021 51.564822,-0.609023 51.564816,-0.609023 51.564807,-0.609017 51.564789,-0.609011 51.564781,-0.609003 51.564774,-0.608979 51.564763,-0.608955 51.564758,-0.608897 51.564753,-0.608882 51.564749,-0.608846 51.564725,-0.608837 51.564721,-0.608828 51.564718,-0.608779 51.564713,-0.608759 51.564697,-0.608743 51.564688,-0.608734 51.564686,-0.608710 51.564692,-0.608675 51.564705,-0.608634 51.564711,-0.608608 51.564719,-0.608600 51.564724,-0.608594 51.564730,-0.608587 51.564746,-0.608587 51.564761,-0.608591 51.564769,-0.608599 51.564778,-0.608612 51.564785,-0.608638 51.564791,-0.608677 51.564795,-0.608748 51.564798,-0.608769 51.564801,-0.608805 51.564810,-0.608877 51.564839,-0.608895 51.564844,-0.608936 51.564851,-0.608964 51.564852,-0.608977 51.564851,-0.609006 51.564839)))
point: POINT (-0.608806 51.564771)
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.