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: ZZZZDVESXE685
name: The Bucks County Council (Amersham Rural District) Tree Preservation Order No 2 - 1955 Confirmed by
tree-preservation-order: undefined
TPO/1955/002
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.566272 51.647235,-0.566283 51.647246,-0.566270 51.647269,-0.566013 51.647647,-0.566273 51.647703,-0.571029 51.648475,-0.571098 51.648346,-0.571143 51.648281,-0.571280 51.648120,-0.571476 51.647932,-0.571839 51.647610,-0.571668 51.647431,-0.571499 51.647204,-0.571270 51.646778,-0.571014 51.646885,-0.570959 51.646822,-0.570782 51.646662,-0.570696 51.646565,-0.570643 51.646523,-0.570374 51.646348,-0.570177 51.646161,-0.570091 51.646098,-0.569850 51.646232,-0.569436 51.646440,-0.569315 51.646379,-0.569250 51.646337,-0.569186 51.646323,-0.568781 51.646372,-0.568603 51.646408,-0.568313 51.646525,-0.567838 51.646803,-0.567574 51.646557,-0.567462 51.646482,-0.567312 51.646404,-0.567284 51.646385,-0.567246 51.646337,-0.567189 51.646184,-0.567094 51.645851,-0.567082 51.645782,-0.567102 51.645660,-0.567100 51.645598,-0.567000 51.645700,-0.566991 51.645732,-0.566948 51.645798,-0.566855 51.645881,-0.566712 51.645977,-0.565999 51.646369,-0.565695 51.646553,-0.566078 51.646901,-0.566341 51.647168,-0.566272 51.647235)))
point: POINT (-0.568855 51.647229)
notes
organisation
entry-date: 2010-02-18
start-date: 2010-02-18
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.