Tree preservation zone

There is a problem

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

reference: 90/00527/C/1
name: Pex House, Stones Road, Todmorden
tree-preservation-order: undefined
90/00527/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.109461 53.708527,-2.109375 53.708547,-2.109308 53.708548,-2.109218 53.708527,-2.109213 53.708512,-2.109189 53.708516,-2.109178 53.708564,-2.109218 53.708625,-2.109236 53.708631,-2.109274 53.708627,-2.109547 53.708552,-2.109610 53.708473,-2.109655 53.708445,-2.109726 53.708425,-2.109689 53.708366,-2.109503 53.708136,-2.109400 53.708064,-2.109281 53.708020,-2.109365 53.708267,-2.109390 53.708265,-2.109395 53.708278,-2.109469 53.708273,-2.109479 53.708320,-2.109403 53.708325,-2.109418 53.708402,-2.109461 53.708527)),((-2.109125 53.708437,-2.109106 53.708440,-2.109021 53.708203,-2.108994 53.708205,-2.108974 53.708096,-2.109212 53.708082,-2.109203 53.708021,-2.109174 53.707988,-2.108965 53.707878,-2.108947 53.707924,-2.108727 53.708068,-2.108668 53.708136,-2.108644 53.708180,-2.108647 53.708202,-2.108676 53.708238,-2.108832 53.708309,-2.108845 53.708321,-2.108863 53.708358,-2.108869 53.708419,-2.108884 53.708455,-2.108968 53.708487,-2.109059 53.708494,-2.109106 53.708486,-2.109134 53.708468,-2.109139 53.708454,-2.109125 53.708437)))
point: POINT (-2.109152 53.708252)
notes: Sycamore, lime, beech
entry-date: 1990-09-28
start-date: 1990-09-28
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.