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: ZZZZZSESRW195
name: South Bucks District Council (No. 1) Tree Preservation Order 1990; dated 6/2/90; made under Sections
tree-preservation-order: undefined
TPO/SBDC/1990/01
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.610403 51.578017,-0.610423 51.577882,-0.610431 51.577849,-0.610457 51.577748,-0.610512 51.577570,-0.610541 51.577462,-0.610539 51.577450,-0.610541 51.577404,-0.610550 51.577283,-0.610545 51.577254,-0.610534 51.577225,-0.610510 51.577147,-0.610491 51.577074,-0.610483 51.577015,-0.610468 51.576798,-0.610436 51.576554,-0.610438 51.576495,-0.610446 51.576425,-0.610456 51.576380,-0.610478 51.576317,-0.610486 51.576282,-0.610506 51.576214,-0.610506 51.576198,-0.610500 51.576150,-0.610494 51.576129,-0.610397 51.575929,-0.610322 51.575763,-0.610166 51.575771,-0.610048 51.575783,-0.609603 51.575851,-0.609288 51.575879,-0.609224 51.575889,-0.609172 51.575899,-0.609021 51.575933,-0.609065 51.576551,-0.609061 51.576601,-0.609059 51.576675,-0.609068 51.576790,-0.609062 51.576860,-0.609049 51.576896,-0.609046 51.576932,-0.609072 51.577047,-0.609074 51.577067,-0.609072 51.577095,-0.609016 51.577345,-0.609015 51.577376,-0.609029 51.577607,-0.609031 51.577616,-0.609027 51.577623,-0.609018 51.577663,-0.608980 51.577874,-0.610403 51.578017)))
point: POINT (-0.609772 51.576903)
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.