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_011
name: A11
tree-preservation-order: undefined
TPO1960_003AIR
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.682479 53.862872,-1.682451 53.862953,-1.682765 53.863001,-1.682885 53.863073,-1.682973 53.863180,-1.683056 53.863300,-1.683096 53.863397,-1.683188 53.863545,-1.683208 53.863526,-1.683793 53.864428,-1.683817 53.864481,-1.683813 53.864514,-1.683760 53.864523,-1.683563 53.864518,-1.682022 53.864162,-1.682555 53.862970,-1.682447 53.862953,-1.681885 53.864195,-1.683052 53.864464,-1.683229 53.864539,-1.683293 53.864575,-1.683929 53.864574,-1.683974 53.864505,-1.683847 53.864295,-1.683472 53.863708,-1.683412 53.863653,-1.683425 53.863629,-1.683337 53.863489,-1.683273 53.863403,-1.683197 53.863345,-1.682986 53.863023,-1.682910 53.862961,-1.682789 53.862913,-1.682479 53.862872)))
point: POINT (-1.682929 53.863819)
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.