Tree preservation zone

There is a problem

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

reference: 80/00061/TPO G1
name: The Sandwell Borough Council Tree Preservation Order No9 1980
tree-preservation-order: undefined
80/00061/TPO
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.049162 52.496335,-2.049061 52.496544,-2.049066 52.496553,-2.049126 52.496561,-2.049197 52.496552,-2.049224 52.496542,-2.049276 52.496501,-2.049366 52.496491,-2.049384 52.496477,-2.049394 52.496451,-2.049373 52.496415,-2.049293 52.496383,-2.049293 52.496362,-2.049345 52.496286,-2.049358 52.496237,-2.049351 52.496192,-2.049379 52.496116,-2.049422 52.496070,-2.049461 52.496049,-2.049474 52.496022,-2.049466 52.496006,-2.049434 52.495990,-2.049264 52.495946,-2.049240 52.495926,-2.049231 52.495908,-2.049255 52.495852,-2.049285 52.495826,-2.049365 52.495768,-2.049427 52.495748,-2.049480 52.495752,-2.049561 52.495773,-2.049632 52.495820,-2.049701 52.495845,-2.049814 52.495866,-2.049945 52.495870,-2.049992 52.495861,-2.050018 52.495843,-2.049960 52.495733,-2.049886 52.495689,-2.049622 52.495681,-2.049350 52.495649,-2.049076 52.495706,-2.048791 52.495818,-2.048703 52.495863,-2.048540 52.495987,-2.048491 52.496013,-2.048434 52.496063,-2.049162 52.496335)))
point: POINT (-2.049154 52.496009)
notes
organisation
entry-date: 2004-09-21
start-date: 1980-01-01
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.