Tree preservation zone

There is a problem

tree-preservation-order column must match the reference field in the tree preservation order dataset

reference: TPO307
name: The Rectory
tree-preservation-order: undefined
Saxby all Saints 1954
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.501283 53.637187,-0.501433 53.637415,-0.501640 53.637583,-0.501790 53.637769,-0.501979 53.638015,-0.502104 53.637982,-0.502142 53.637974,-0.502180 53.637958,-0.502201 53.637947,-0.502235 53.637934,-0.502259 53.637922,-0.502293 53.637908,-0.502313 53.637898,-0.502334 53.637884,-0.502375 53.637863,-0.502461 53.637797,-0.502488 53.637779,-0.502558 53.637741,-0.502643 53.637710,-0.502805 53.637654,-0.502899 53.637630,-0.503005 53.637635,-0.503039 53.637635,-0.503012 53.637559,-0.502940 53.637411,-0.502911 53.637343,-0.502878 53.637279,-0.502868 53.637254,-0.502861 53.637243,-0.502782 53.637077,-0.502743 53.637005,-0.502685 53.636891,-0.502672 53.636862,-0.502636 53.636794,-0.502593 53.636807,-0.502558 53.636814,-0.502226 53.636932,-0.502129 53.636971,-0.502118 53.636973,-0.502027 53.637008,-0.501891 53.637054,-0.501793 53.637081,-0.501706 53.637107,-0.501667 53.637116,-0.501516 53.637156,-0.501294 53.637184,-0.501283 53.637187)))
point: POINT (-0.502215 53.637395)
notes
entry-date: 1963-06-03
start-date: 1954-06-30
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.