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: ZZZZZSESRW163
name: South Bucks District Council Tree preservation Order No.06, 2012. Dated 25/4/12. Confirmed 5/9/12.
tree-preservation-order: undefined
TPO/SBDC/2012/06
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.658833 51.551637,-0.658879 51.551923,-0.658914 51.551980,-0.659144 51.551969,-0.659206 51.551975,-0.659539 51.552021,-0.659904 51.552055,-0.660147 51.552095,-0.660421 51.552126,-0.660416 51.551933,-0.660483 51.551768,-0.660490 51.551630,-0.660557 51.551021,-0.660646 51.550701,-0.660815 51.550190,-0.660931 51.549747,-0.661046 51.549138,-0.661049 51.549087,-0.661086 51.548960,-0.661094 51.548901,-0.661095 51.548767,-0.660183 51.548983,-0.660012 51.549058,-0.660119 51.549182,-0.660122 51.549242,-0.659454 51.549391,-0.659400 51.549372,-0.659323 51.549359,-0.659131 51.549392,-0.658917 51.549397,-0.658852 51.549446,-0.658839 51.549489,-0.658823 51.549653,-0.658849 51.550050,-0.658838 51.550127,-0.658790 51.550323,-0.658770 51.550528,-0.658734 51.550657,-0.658727 51.550723,-0.658753 51.550826,-0.658758 51.551451,-0.658833 51.551637)))
point: POINT (-0.659832 51.550497)
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.