Tree preservation zone

There is a problem

294 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: 92/00658/C
name: Rear of Brook Mills, Saddleworth Road, Greetland
tree-preservation-order: undefined
92/00658/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.860322 53.685877,-1.860320 53.685878,-1.860325 53.685895,-1.860622 53.685821,-1.860726 53.685800,-1.860795 53.685788,-1.860871 53.685779,-1.861049 53.685752,-1.861181 53.685736,-1.861323 53.685724,-1.861611 53.685696,-1.861898 53.685639,-1.861831 53.685544,-1.861803 53.685550,-1.861746 53.685558,-1.861626 53.685583,-1.861390 53.685627,-1.861339 53.685642,-1.861287 53.685665,-1.861255 53.685672,-1.861202 53.685680,-1.861114 53.685696,-1.860981 53.685717,-1.860894 53.685729,-1.860679 53.685768,-1.860568 53.685798,-1.860452 53.685835,-1.860355 53.685868,-1.860322 53.685877)))
point: POINT (-1.8613 53.685691)
notes: Sycamore(17) Willow (12)
entry-date: 1992-07-06
start-date: 1992-07-06
end-date

Your data is missing a tree-preservation-order.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.