Tree preservation zone

There is a problem

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

reference: 1970/SCC W4
name: Land at Oxted
tree-preservation-order: undefined
1970/SCC
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.008912 51.267780,-0.008619 51.267555,-0.008307 51.267574,-0.007204 51.267721,-0.007043 51.267731,-0.006728 51.267814,-0.006361 51.267993,-0.005572 51.268098,-0.004684 51.267435,-0.004488 51.267396,-0.004242 51.267171,-0.004867 51.266914,-0.005376 51.266739,-0.005700 51.266667,-0.005338 51.266318,-0.005239 51.266197,-0.005201 51.266195,-0.004604 51.266464,-0.004394 51.266520,-0.004209 51.266630,-0.003815 51.266784,-0.003602 51.266899,-0.003664 51.266989,-0.003707 51.267097,-0.004006 51.267399,-0.004343 51.267691,-0.004441 51.267829,-0.004751 51.268090,-0.005130 51.268275,-0.005279 51.268319,-0.005472 51.268441,-0.006079 51.268624,-0.006177 51.268751,-0.006877 51.268721,-0.006610 51.268568,-0.006469 51.268333,-0.006559 51.268222,-0.008912 51.267780)))
point: POINT (-0.005708 51.267594)
notes
organisation
entry-date: 1969-11-03
start-date: 1969-11-03
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.