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: ZZZZZSESRW347
name: South Bucks District Council (No.4) Tree Preservation Order 1985 dated 31/7/85 under Ss.60 & 61 of t
tree-preservation-order: undefined
TPO/SBDC/1985/04
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.554795 51.591663,-0.554815 51.591662,-0.554834 51.591659,-0.554851 51.591654,-0.554867 51.591648,-0.554893 51.591630,-0.554901 51.591619,-0.554907 51.591607,-0.554909 51.591595,-0.554908 51.591583,-0.554903 51.591571,-0.554895 51.591560,-0.554884 51.591550,-0.554871 51.591541,-0.554855 51.591534,-0.554838 51.591529,-0.554800 51.591524,-0.554780 51.591525,-0.554744 51.591533,-0.554714 51.591548,-0.554702 51.591558,-0.554688 51.591580,-0.554686 51.591592,-0.554692 51.591616,-0.554700 51.591627,-0.554711 51.591637,-0.554724 51.591646,-0.554740 51.591653,-0.554776 51.591662,-0.554795 51.591663)))
point: POINT (-0.554798 51.591594)
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.