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: 801
name: THE BIRMINGHAM (LAND AT TUDOR HILL, CATHERINE DRIVE AND MORNINGSIDE, SUTTON COLDFIELD) TPO 1999
tree-preservation-order: undefined
TPO 801
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.833950 52.569223,-1.833912 52.569013,-1.834488 52.568949,-1.834429 52.568617,-1.834405 52.568428,-1.834283 52.567816,-1.834204 52.567760,-1.834103 52.567762,-1.833547 52.567606,-1.833051 52.567535,-1.833018 52.567381,-1.832762 52.567013,-1.832708 52.567031,-1.832744 52.567071,-1.832734 52.567074,-1.832758 52.567102,-1.832920 52.567403,-1.831743 52.567877,-1.831621 52.567694,-1.831471 52.567506,-1.831386 52.567418,-1.831208 52.567293,-1.830422 52.567815,-1.830377 52.567854,-1.830895 52.568113,-1.831067 52.568364,-1.831311 52.568481,-1.830931 52.568766,-1.831889 52.568753,-1.831951 52.569285,-1.832413 52.569316,-1.832501 52.569305,-1.833950 52.569223)))
point: POINT (-1.832662 52.568333)
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.