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: tpo1965
name: Walkington - 1972
tree-preservation-order: undefined
262
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.486493 53.815031,-0.486472 53.815034,-0.485305 53.812576,-0.484098 53.812602,-0.482691 53.814017,-0.482331 53.814530,-0.482002 53.815019,-0.481862 53.815006,-0.481752 53.814980,-0.481614 53.814913,-0.481507 53.814823,-0.478835 53.815369,-0.478671 53.815646,-0.478657 53.815775,-0.478532 53.815931,-0.478665 53.816001,-0.478365 53.816241,-0.478360 53.816394,-0.478709 53.816995,-0.478720 53.816996,-0.479160 53.816916,-0.479095 53.816766,-0.481108 53.816393,-0.481213 53.816549,-0.482598 53.816305,-0.482824 53.816748,-0.484828 53.816619,-0.485051 53.817103,-0.485527 53.817014,-0.485694 53.817391,-0.486230 53.817302,-0.486291 53.817267,-0.486076 53.816837,-0.486450 53.816764,-0.486483 53.816675,-0.486156 53.815999,-0.486884 53.815872,-0.486521 53.815097,-0.486509 53.815095,-0.486488 53.815050,-0.486493 53.815031)))
point: POINT (-0.483348 53.815242)
notes
entry-date: 2026-03-17
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.