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: ZZZZZSESRW415
name: TREE PRESERVATION ORDER dated 11/6/75; pursuant to Ss.60 & 61 of the Town and Country Planning Act 1
tree-preservation-order: undefined
TPO/BD/1975/07
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.685983 51.532615,-0.685937 51.532572,-0.685869 51.532514,-0.685754 51.532412,-0.685718 51.532379,-0.685575 51.532238,-0.685501 51.532169,-0.685417 51.532101,-0.685410 51.532090,-0.685209 51.531944,-0.685141 51.531891,-0.685005 51.531779,-0.684950 51.531728,-0.684472 51.531942,-0.684430 51.532000,-0.684634 51.532198,-0.684683 51.532230,-0.684724 51.532358,-0.685121 51.532749,-0.685175 51.532807,-0.685244 51.532874,-0.685298 51.532850,-0.685601 51.532732,-0.685608 51.532706,-0.685701 51.532670,-0.685791 51.532664,-0.685983 51.532615)))
point: POINT (-0.685164 51.532309)
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.