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: ZZZZZUESRW650
name: South Bucks District Council Tree Preservation Order No.35; 2001 dated 15/6/2001. confirmed 4/10/200
tree-preservation-order: undefined
TPO/SBDC/2001/35
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.612533 51.550942,-0.612521 51.550931,-0.612479 51.550917,-0.612456 51.550915,-0.612404 51.550916,-0.612321 51.550921,-0.612297 51.550925,-0.612263 51.550937,-0.612246 51.550941,-0.612223 51.550943,-0.612184 51.550942,-0.612133 51.550964,-0.612118 51.550969,-0.612103 51.550971,-0.612086 51.550970,-0.612043 51.550957,-0.612030 51.550955,-0.612005 51.550958,-0.611988 51.550962,-0.611976 51.550967,-0.611946 51.550989,-0.611941 51.550995,-0.611938 51.551012,-0.611939 51.551024,-0.611946 51.551039,-0.611979 51.551068,-0.612000 51.551081,-0.612063 51.551111,-0.612089 51.551117,-0.612104 51.551118,-0.612174 51.551118,-0.612195 51.551110,-0.612242 51.551085,-0.612251 51.551082,-0.612263 51.551080,-0.612315 51.551087,-0.612363 51.551087,-0.612376 51.551084,-0.612388 51.551079,-0.612413 51.551067,-0.612430 51.551056,-0.612470 51.551044,-0.612475 51.551036,-0.612475 51.551026,-0.612481 51.551020,-0.612494 51.551015,-0.612522 51.550999,-0.612535 51.550991,-0.612540 51.550984,-0.612544 51.550969,-0.612543 51.550960,-0.612541 51.550954,-0.612533 51.550942)))
point: POINT (-0.612239 51.551013)
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.