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: 26
name
tree-preservation-order: undefined
Multiple Addresses In The New Malden Area
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-0.270098 51.417704,-0.270094 51.417703,-0.270097 51.417660,-0.270037 51.417651,-0.270062 51.417585,-0.269185 51.417576,-0.268501 51.417511,-0.267881 51.417494,-0.267674 51.417496,-0.267511 51.417501,-0.266954 51.417537,-0.266659 51.417571,-0.266484 51.417422,-0.266341 51.417201,-0.266223 51.417024,-0.266124 51.416871,-0.265942 51.416595,-0.265549 51.416033,-0.265412 51.416098,-0.265417 51.416103,-0.265274 51.416167,-0.265216 51.416189,-0.265287 51.416303,-0.265340 51.416383,-0.265357 51.416406,-0.265441 51.416537,-0.265457 51.416566,-0.265702 51.416937,-0.266085 51.417523,-0.266323 51.417883,-0.266409 51.417893,-0.266512 51.417873,-0.266617 51.417855,-0.266739 51.417836,-0.266807 51.417827,-0.266877 51.417818,-0.267046 51.417800,-0.267247 51.417785,-0.267529 51.417770,-0.267862 51.417763,-0.268011 51.417763,-0.268263 51.417772,-0.268322 51.417741,-0.268392 51.417743,-0.268449 51.417779,-0.269143 51.417817,-0.269412 51.417836,-0.269872 51.417873,-0.269945 51.417843,-0.270014 51.417849,-0.270050 51.417888,-0.270088 51.417891,-0.270082 51.417752,-0.270098 51.417704)))
point: POINT (-0.267236 51.417352)
notes
entry-date: 2018-12-18
start-date
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.