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: ZZZZZTESRW111
name: South Bucks District Council (No.15) Tree Preservation Order 1995; dated 3/5/95; made under Sections
tree-preservation-order: undefined
TPO/SBDC/1995/15
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.655057 51.609419,-0.654917 51.609132,-0.655298 51.609021,-0.656051 51.609028,-0.656072 51.608879,-0.656140 51.608525,-0.656268 51.608151,-0.656157 51.608118,-0.655875 51.608307,-0.655649 51.608446,-0.655326 51.608629,-0.655219 51.608680,-0.654764 51.608832,-0.654456 51.608924,-0.653770 51.609066,-0.653255 51.609137,-0.653086 51.609147,-0.652818 51.609127,-0.652293 51.609072,-0.651792 51.608992,-0.651806 51.609269,-0.651802 51.609429,-0.651761 51.609792,-0.651729 51.610178,-0.652691 51.610163,-0.652700 51.609847,-0.653420 51.609868,-0.653800 51.609850,-0.654196 51.609821,-0.654699 51.609771,-0.654757 51.609968,-0.654777 51.609984,-0.654864 51.610244,-0.654919 51.610236,-0.654925 51.610221,-0.654956 51.610218,-0.654965 51.610228,-0.655413 51.610156,-0.655409 51.610150,-0.655772 51.610079,-0.655826 51.610060,-0.655853 51.610038,-0.655899 51.609942,-0.655959 51.609741,-0.655983 51.609633,-0.655969 51.609614,-0.655984 51.609604,-0.656016 51.609399,-0.655057 51.609419)))
point: POINT (-0.654044 51.609428)
notes
organisation
entry-date: 2017-07-04
start-date: 2017-07-04
end-date

Your dataset is missing the tree-preservation-order column.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.