Tree preservation zone

There is a problem

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

reference: 4/1998/TAN A1
name: Land at Kenley Close and Anson Close and Gauntlet Crescent Caterham
tree-preservation-order: undefined
4/1998/TAN
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.097356 51.301107,-0.097239 51.300940,-0.097359 51.300888,-0.097405 51.300777,-0.097476 51.300646,-0.097468 51.300530,-0.097343 51.300429,-0.097434 51.300381,-0.097000 51.300140,-0.096351 51.299807,-0.095733 51.299595,-0.095178 51.299483,-0.094784 51.299456,-0.094393 51.299458,-0.094301 51.299415,-0.094291 51.299361,-0.094095 51.299374,-0.093991 51.299208,-0.093523 51.299296,-0.093157 51.298603,-0.093300 51.298580,-0.093185 51.298460,-0.093064 51.298447,-0.091996 51.298678,-0.092391 51.299381,-0.092354 51.299426,-0.092388 51.299440,-0.092699 51.299933,-0.093125 51.300571,-0.093344 51.300885,-0.094733 51.300478,-0.094835 51.300574,-0.094809 51.300619,-0.094833 51.300620,-0.095362 51.301269,-0.095355 51.301310,-0.095418 51.301365,-0.095489 51.301366,-0.095485 51.301292,-0.095067 51.300677,-0.094937 51.300534,-0.094834 51.300446,-0.094662 51.300183,-0.094582 51.300115,-0.094490 51.299904,-0.094670 51.299857,-0.095114 51.300546,-0.095734 51.301436,-0.096044 51.301511,-0.096315 51.301396,-0.096979 51.301217,-0.096974 51.301204,-0.097356 51.301107)))
point: POINT (-0.094743 51.300092)
notes
organisation
entry-date: 1997-02-16
start-date: 1997-02-16
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.