Tree preservation zone

There is a problem

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

reference: 6/C&W W1
name: Woodlands and Woodside Harestone Lane Caterham
tree-preservation-order: undefined
6/C&W
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.088697 51.276342,-0.088706 51.276348,-0.088542 51.276623,-0.088083 51.277476,-0.087753 51.278057,-0.087441 51.278650,-0.087114 51.279137,-0.086743 51.279635,-0.086018 51.280411,-0.086193 51.280547,-0.086375 51.280430,-0.086548 51.280426,-0.086964 51.280162,-0.087184 51.279818,-0.087447 51.279615,-0.087476 51.279534,-0.087709 51.279106,-0.087737 51.279106,-0.087844 51.278900,-0.087950 51.278744,-0.088091 51.278589,-0.088192 51.278581,-0.088210 51.278386,-0.088478 51.277920,-0.088589 51.277651,-0.088640 51.277488,-0.088670 51.277425,-0.088764 51.277326,-0.088855 51.277356,-0.088949 51.276970,-0.089218 51.276583,-0.089380 51.276580,-0.089800 51.276625,-0.089929 51.276809,-0.090081 51.276799,-0.090086 51.276680,-0.090000 51.276571,-0.090508 51.276485,-0.090541 51.276353,-0.090765 51.275726,-0.090835 51.275759,-0.091538 51.275297,-0.091364 51.275162,-0.091218 51.275191,-0.091006 51.275307,-0.090737 51.275518,-0.090567 51.275710,-0.090305 51.275958,-0.090205 51.275988,-0.089979 51.276010,-0.089623 51.276130,-0.089464 51.276291,-0.089108 51.276178,-0.088738 51.276216,-0.088697 51.276342)))
point: POINT (-0.088501 51.277731)
notes
organisation
entry-date: 1959-08-04
start-date: 1959-08-04
end-date

Your dataset is missing the tree-preservation-order column.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.