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: TPO1960_003AIR_A_016
name: A16
tree-preservation-order: undefined
TPO1960_003AIR
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.692383 53.847296,-1.692408 53.847337,-1.692504 53.847341,-1.692529 53.847329,-1.692549 53.847302,-1.692525 53.847260,-1.692501 53.847028,-1.692836 53.846674,-1.692937 53.846612,-1.693058 53.846612,-1.693722 53.846790,-1.693872 53.846865,-1.694194 53.846958,-1.694829 53.846956,-1.695065 53.846936,-1.695318 53.846889,-1.695599 53.846911,-1.695720 53.846941,-1.696055 53.847260,-1.696105 53.847338,-1.696120 53.847409,-1.695941 53.847683,-1.695886 53.847721,-1.695800 53.847742,-1.695991 53.847746,-1.696251 53.847350,-1.696166 53.847299,-1.696096 53.847231,-1.695931 53.846983,-1.695897 53.846920,-1.695636 53.846795,-1.695228 53.846731,-1.694815 53.846778,-1.694246 53.846794,-1.694024 53.846782,-1.693727 53.846736,-1.692953 53.846493,-1.692898 53.846537,-1.692842 53.846549,-1.692340 53.847010,-1.692383 53.847296)))
point: POINT (-1.694358 53.84692)
notes
entry-date: 2026-02-12
start-date: 1963-07-14
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.