Tree preservation zone

There is a problem

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

reference: TPO155
name: Land situated in Low Burnham
tree-preservation-order: undefined
Low Burnham, Haxey Parish Order 2003
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.816459 53.509592,-0.816479 53.509586,-0.816521 53.509577,-0.816574 53.509571,-0.816701 53.509567,-0.816817 53.509568,-0.816969 53.509582,-0.817085 53.509587,-0.817144 53.509585,-0.817166 53.509581,-0.817201 53.509568,-0.817233 53.509567,-0.817271 53.509579,-0.817300 53.509584,-0.817344 53.509588,-0.817496 53.509591,-0.817832 53.509605,-0.817950 53.509613,-0.818091 53.509627,-0.818266 53.509642,-0.818537 53.509640,-0.818544 53.509588,-0.818583 53.509350,-0.818320 53.509320,-0.818146 53.509305,-0.817937 53.509292,-0.817643 53.509278,-0.817352 53.509262,-0.816862 53.509246,-0.816660 53.509261,-0.816597 53.509267,-0.816561 53.509298,-0.816397 53.509288,-0.816337 53.509289,-0.816333 53.509307,-0.816330 53.509314,-0.816459 53.509592)))
point: POINT (-0.81748 53.509438)
notes
entry-date: 2003-06-18
start-date: 2003-04-08
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.