Tree preservation zone

There is a problem

tree-preservation-order column must match the reference field in the tree protection order dataset

reference: 75/00055/TPO
name: Sandwell Borough Council Tree Preservation No2 1975
tree-preservation-order: undefined
75/00055/TPO
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.057871 52.466372,-2.057630 52.466447,-2.057353 52.466152,-2.057247 52.466099,-2.057070 52.465931,-2.057025 52.465877,-2.057000 52.465860,-2.056902 52.465879,-2.056809 52.465915,-2.056619 52.466019,-2.056457 52.466126,-2.056111 52.466577,-2.056161 52.466650,-2.056298 52.466809,-2.056391 52.466945,-2.056537 52.467183,-2.056737 52.467443,-2.056798 52.467500,-2.056900 52.467564,-2.057000 52.467605,-2.057301 52.467707,-2.057512 52.467838,-2.057696 52.467935,-2.057805 52.467980,-2.057868 52.467995,-2.057988 52.468006,-2.058068 52.467995,-2.058708 52.467863,-2.058578 52.467678,-2.058604 52.467671,-2.058198 52.467417,-2.058407 52.467252,-2.058511 52.467201,-2.058602 52.467186,-2.058726 52.467187,-2.058958 52.467264,-2.059009 52.467227,-2.059019 52.467203,-2.058968 52.467172,-2.058729 52.466990,-2.058324 52.467105,-2.058205 52.466969,-2.058344 52.466921,-2.057871 52.466372)))
point: POINT (-2.057403 52.466988)
notes
organisation
entry-date: 2004-09-21
start-date: 1975-01-01
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.