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: 490
name: THE BIRMINGHAM (SITE OF FORMER B.L. FACTORY WEBB LANE, HALL GREEN) TPO1987
tree-preservation-order: undefined
TPO 490
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.855654 52.425451,-1.854118 52.425376,-1.854021 52.425337,-1.854011 52.425341,-1.853993 52.425352,-1.853645 52.425755,-1.853755 52.425789,-1.854123 52.426011,-1.854133 52.426075,-1.854121 52.426102,-1.853851 52.426406,-1.854277 52.426656,-1.854453 52.426745,-1.854513 52.426767,-1.854632 52.426835,-1.854672 52.426866,-1.855003 52.427218,-1.855141 52.427310,-1.855192 52.427326,-1.855219 52.427321,-1.855321 52.427244,-1.855380 52.427140,-1.855424 52.427029,-1.855517 52.426540,-1.855502 52.426540,-1.855594 52.426031,-1.855654 52.425451)))
point: POINT (-1.854799 52.426157)
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.