Tree preservation zone

There is a problem

20 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: TPO1957_W1
name
tree-preservation-order: undefined
TPO1957
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.304485 51.806016,-0.304246 51.805853,-0.302513 51.804993,-0.302039 51.804805,-0.301982 51.804775,-0.301947 51.804743,-0.301927 51.804693,-0.301918 51.804641,-0.301923 51.804594,-0.302039 51.804324,-0.301349 51.804188,-0.301240 51.804277,-0.301060 51.804398,-0.300944 51.804537,-0.301248 51.804691,-0.301501 51.804794,-0.301532 51.804798,-0.303777 51.805929,-0.303686 51.806292,-0.304104 51.806138,-0.304418 51.806031,-0.304485 51.806016)))
point: POINT (-0.30259 51.805149)
notes: Locations shown for trees may not be accurate. If confirmation about tree protection is required please contact the Council on 01727 866100 or email treesandwoodlands@stalbans.gov.uk.
organisation
entry-date: 2024-12-02
start-date: 2024-12-02
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.