Tree preservation zone

There is a problem

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

reference: 2/1993/TAN A1
name: Land at Brassey Road Limpsfield
tree-preservation-order: undefined
2/1993/TAN
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((0.007097 51.254381,0.007167 51.254277,0.006279 51.254079,0.006303 51.253834,0.006362 51.253528,0.006443 51.253288,0.006642 51.253380,0.006622 51.253442,0.006608 51.253540,0.006608 51.253650,0.006660 51.253793,0.006642 51.253891,0.006609 51.253992,0.007103 51.254104,0.007480 51.253480,0.006849 51.253263,0.006898 51.253176,0.006952 51.253196,0.007076 51.253262,0.007065 51.253283,0.007079 51.253290,0.007191 51.253322,0.007241 51.253319,0.007346 51.253333,0.007547 51.253404,0.007552 51.253429,0.007566 51.253439,0.007820 51.253578,0.007495 51.254182,0.007832 51.254280,0.008008 51.254212,0.008052 51.254173,0.008105 51.254152,0.008177 51.254161,0.008054 51.254372,0.007997 51.254502,0.007963 51.254609,0.007084 51.254391,0.007091 51.254392,0.007097 51.254381)))
point: POINT (0.007204 51.253972)
notes
organisation
entry-date: 1993-02-19
start-date: 1993-02-19
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.