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: 800
name: THE BIRMINGHAM (HOLLY GARDENS, BIRMINGHAM GREAT PARK, RUBERY) TPO 1999
tree-preservation-order: undefined
TPO 800
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.000178 52.404110,-2.000188 52.404116,-2.000329 52.404080,-2.000730 52.403944,-2.001201 52.403802,-2.001441 52.403723,-2.001872 52.403556,-2.002207 52.403390,-2.002272 52.403366,-2.002458 52.403263,-2.002471 52.403272,-2.002614 52.403179,-2.002681 52.403110,-2.002703 52.403057,-2.002704 52.403025,-2.002683 52.403024,-2.002670 52.402976,-2.002655 52.402952,-2.002565 52.402884,-2.002538 52.402853,-2.002478 52.402750,-2.002442 52.402668,-2.002364 52.402537,-2.002026 52.402095,-2.001966 52.401996,-2.001923 52.401902,-2.001890 52.401870,-2.001917 52.401847,-2.001825 52.401725,-2.001830 52.401715,-2.001820 52.401710,-2.001778 52.401604,-2.001731 52.401564,-2.001595 52.401623,-2.001570 52.401644,-2.000724 52.402124,-1.998984 52.403343,-1.999186 52.403455,-2.000178 52.404110)))
point: POINT (-2.000977 52.402972)
notes: The shaded area represents those properties which fall within the outline of a Tree Preservation Order. To precisely identify trees protected by the Order, you can request a copy of the tree preservation order at the following link.
organisation
entry-date: 2025-11-30
start-date
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.