Tree preservation zone

There is a problem

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

reference: TPO177
name: The Old Rectory
tree-preservation-order: undefined
Epworth No. 1 Order 1977
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-0.818179 53.523583,-0.818175 53.523456,-0.818176 53.523351,-0.818175 53.523177,-0.818173 53.523146,-0.818167 53.523081,-0.818163 53.523068,-0.818156 53.523046,-0.818133 53.523017,-0.818115 53.523004,-0.818034 53.522981,-0.818016 53.522974,-0.817900 53.522957,-0.817831 53.522949,-0.817497 53.522918,-0.817452 53.522915,-0.817434 53.522923,-0.817418 53.522945,-0.817410 53.522972,-0.817448 53.522991,-0.817580 53.523014,-0.817733 53.523030,-0.817843 53.523054,-0.817894 53.523063,-0.817921 53.523073,-0.817960 53.523092,-0.817983 53.523143,-0.817992 53.523184,-0.817991 53.523343,-0.818001 53.523509,-0.818023 53.523579,-0.818050 53.523607,-0.818105 53.523614,-0.818142 53.523596,-0.818179 53.523583)))
point: POINT (-0.817965 53.523193)
notes
entry-date: 1978-01-17
start-date: 1977-06-26
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.