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: 263
name: THE BIRMINGHAM (LAND ADJOINING RIVER TAME HAMSTEAD HILL GREAT BARR) TPO 1978
tree-preservation-order: undefined
TPO 263
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.926127 52.526900,-1.926179 52.526947,-1.926365 52.527019,-1.926636 52.527082,-1.926755 52.527120,-1.927026 52.527257,-1.927096 52.527303,-1.927248 52.527376,-1.927459 52.527537,-1.927488 52.527592,-1.927529 52.527706,-1.927606 52.527813,-1.927652 52.527859,-1.927725 52.527905,-1.928208 52.528123,-1.928235 52.528074,-1.928225 52.528072,-1.928244 52.528033,-1.928422 52.527758,-1.928407 52.527727,-1.928439 52.527676,-1.928476 52.527667,-1.928541 52.527563,-1.927864 52.527209,-1.927517 52.527084,-1.927115 52.526953,-1.926127 52.526900)))
point: POINT (-1.927635 52.527444)
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.