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: ZZZZZXESRW131
name: South Bucks District Council (No.5) Tree Preservation Order 1981 dated 5/8/81 under Ss.60 & 61 of th
tree-preservation-order: undefined
TPO/SBDC/1981/05
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.658786 51.611940,-0.658660 51.611970,-0.658778 51.612252,-0.658884 51.612450,-0.658907 51.612491,-0.658943 51.612549,-0.658944 51.612562,-0.658950 51.612561,-0.658966 51.612550,-0.658977 51.612538,-0.659008 51.612472,-0.659010 51.612473,-0.659083 51.612345,-0.659088 51.612327,-0.659089 51.612317,-0.659090 51.612299,-0.659087 51.612281,-0.659076 51.612254,-0.659066 51.612237,-0.659048 51.612212,-0.659032 51.612196,-0.658998 51.612169,-0.658945 51.612133,-0.658870 51.612087,-0.658853 51.612073,-0.658836 51.612056,-0.658813 51.612026,-0.658805 51.612003,-0.658804 51.611988,-0.658800 51.611966,-0.658797 51.611957,-0.658786 51.611940)))
point: POINT (-0.658891 51.612242)
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.