Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: ZZZZZSESRW267
name: South Bucks District Council (No.4) Tree Preservation Order; 1984; dated 7/11/84 under Ss.60 & 61 of
tree-preservation-order: undefined
TPO/SBDC/1984/04
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.592895 51.570883,-0.592890 51.570882,-0.592875 51.570910,-0.592865 51.570939,-0.592863 51.570969,-0.592873 51.571030,-0.592888 51.571061,-0.592910 51.571089,-0.592920 51.571107,-0.592934 51.571123,-0.592951 51.571138,-0.592972 51.571151,-0.593013 51.571170,-0.593053 51.571181,-0.593075 51.571183,-0.593104 51.571181,-0.593133 51.571176,-0.593161 51.571168,-0.593186 51.571158,-0.593209 51.571146,-0.593255 51.571107,-0.593275 51.571080,-0.593289 51.571052,-0.593295 51.571023,-0.593299 51.570979,-0.593295 51.570895,-0.593292 51.570874,-0.593283 51.570854,-0.593269 51.570835,-0.593250 51.570817,-0.593227 51.570802,-0.593200 51.570789,-0.593169 51.570780,-0.593137 51.570774,-0.593104 51.570771,-0.593070 51.570772,-0.593037 51.570776,-0.593005 51.570784,-0.592976 51.570795,-0.592951 51.570808,-0.592929 51.570825,-0.592912 51.570843,-0.592901 51.570863,-0.592895 51.570883)))
point: POINT (-0.593087 51.570973)
notes
entry-date: 2017-07-04
start-date: 2017-07-04
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.