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: 156
name: THE BIRMINGHAM (UNION COLD STORAGE CO LTD, WALSALL ROAD PERRY BARR) TPO 1974
tree-preservation-order: undefined
TPO 156
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.911437 52.530181,-1.910858 52.530512,-1.910105 52.530935,-1.910164 52.530949,-1.910182 52.530944,-1.911661 52.531241,-1.911720 52.531309,-1.911770 52.531334,-1.911790 52.531267,-1.911819 52.531229,-1.911868 52.531182,-1.911904 52.531162,-1.911964 52.531143,-1.912387 52.531065,-1.912578 52.530972,-1.912583 52.530942,-1.912217 52.530686,-1.911722 52.530351,-1.911538 52.530232,-1.911437 52.530181)))
point: POINT (-1.911423 52.530791)
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.