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: 260
name: THE BIRMINGHAM (THE PRIORY, BRISTOL ROAD SOUTH, NORTHFIELD) TPO 1975
tree-preservation-order: undefined
TPO 260
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.964353 52.419302,-1.963644 52.418956,-1.962796 52.418628,-1.961040 52.417929,-1.960914 52.417871,-1.960861 52.417859,-1.960245 52.417604,-1.960207 52.417575,-1.960038 52.417386,-1.959536 52.417414,-1.959391 52.417415,-1.959271 52.417428,-1.959140 52.417468,-1.959024 52.417522,-1.959188 52.417747,-1.959356 52.418022,-1.959434 52.418065,-1.959554 52.418171,-1.959754 52.418432,-1.959833 52.418522,-1.959892 52.418611,-1.959878 52.418616,-1.959903 52.418650,-1.959994 52.418746,-1.960100 52.418818,-1.960188 52.418891,-1.960240 52.418921,-1.960306 52.418977,-1.960522 52.419114,-1.960707 52.419252,-1.961783 52.419619,-1.962284 52.419778,-1.963162 52.420135,-1.964464 52.419357,-1.964409 52.419322,-1.964353 52.419302)))
point: POINT (-1.961653 52.418803)
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.