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: TPO2011_016_G_001
name: G1
tree-preservation-order: undefined
TPO2011_016
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.733225 53.880371,-1.733168 53.880330,-1.733047 53.880275,-1.732788 53.880188,-1.732359 53.880077,-1.731893 53.879987,-1.731193 53.879905,-1.730363 53.879795,-1.729832 53.879746,-1.728985 53.879768,-1.728571 53.879815,-1.728413 53.879853,-1.728360 53.879889,-1.728360 53.879922,-1.728408 53.879948,-1.728505 53.879949,-1.728639 53.879923,-1.728935 53.879899,-1.729207 53.879859,-1.729381 53.879845,-1.729754 53.879839,-1.730111 53.879854,-1.730654 53.879913,-1.731747 53.880066,-1.732188 53.880139,-1.732375 53.880185,-1.732561 53.880248,-1.732747 53.880298,-1.733078 53.880448,-1.733151 53.880457,-1.733241 53.880402,-1.733225 53.880371)))
point: POINT (-1.730864 53.879982)
notes
entry-date: 2026-02-12
start-date: 2011-06-29
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.