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: ZZZZZVESRW281
name: South Bucks District Council (No.41) Tree Preservation Order 2000; dated 6/6/2000. Confirmed 18/4/20
tree-preservation-order: undefined
TPO/SBDC/2000/41
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.657840 51.611889,-0.657601 51.611914,-0.657577 51.611919,-0.657562 51.611925,-0.657553 51.611937,-0.657542 51.611947,-0.657536 51.611962,-0.657535 51.611973,-0.657541 51.611985,-0.657556 51.612002,-0.657574 51.612010,-0.657599 51.612016,-0.657618 51.612018,-0.657646 51.612018,-0.657676 51.612016,-0.657950 51.611986,-0.657993 51.611973,-0.658005 51.611965,-0.658012 51.611957,-0.658015 51.611947,-0.658007 51.611897,-0.657968 51.611747,-0.657962 51.611735,-0.657950 51.611717,-0.657938 51.611704,-0.657922 51.611694,-0.657908 51.611690,-0.657885 51.611689,-0.657855 51.611689,-0.657836 51.611692,-0.657820 51.611699,-0.657804 51.611715,-0.657800 51.611729,-0.657799 51.611742,-0.657812 51.611812,-0.657824 51.611850,-0.657840 51.611889)))
point: POINT (-0.657824 51.611888)
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.