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: ZZZZZXESRW036
name: Beaconsfield District Council (No.1) Tree Preservation Order 1977; dated 28/1/77 under Ss.60 & 61 of
tree-preservation-order: undefined
TPO/BD/1977/01
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.543974 51.587476,-0.544249 51.587386,-0.544461 51.587327,-0.544768 51.587260,-0.544994 51.587214,-0.545265 51.587172,-0.545421 51.587151,-0.545568 51.587143,-0.545625 51.587143,-0.545643 51.587140,-0.545908 51.587141,-0.545902 51.587023,-0.545895 51.586930,-0.545892 51.586843,-0.545729 51.586815,-0.545477 51.586691,-0.545113 51.586596,-0.545063 51.586570,-0.544932 51.586475,-0.544900 51.586459,-0.544770 51.586401,-0.544643 51.586351,-0.544614 51.586329,-0.544417 51.586152,-0.544076 51.586035,-0.543420 51.585883,-0.543396 51.586061,-0.543394 51.586164,-0.543377 51.586346,-0.543364 51.586384,-0.543349 51.586421,-0.543250 51.586565,-0.543293 51.586624,-0.543349 51.586693,-0.543415 51.586779,-0.543438 51.586806,-0.543502 51.586906,-0.543542 51.586956,-0.543710 51.587155,-0.543974 51.587476)))
point: POINT (-0.54437 51.586732)
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.