Tree preservation zone

There is a problem

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

reference: IC9C4LDNBB000
name: Blaise Dell Hallen Road Bristol
tree-preservation-order: undefined
229
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.641819 51.511065,-2.641705 51.511029,-2.641660 51.511017,-2.641648 51.511025,-2.641644 51.511037,-2.641652 51.511041,-2.641663 51.511051,-2.641716 51.511072,-2.641722 51.511077,-2.641722 51.511089,-2.641707 51.511105,-2.641703 51.511113,-2.641681 51.511116,-2.641678 51.511125,-2.641675 51.511128,-2.641653 51.511129,-2.641645 51.511132,-2.641641 51.511142,-2.641611 51.511169,-2.641610 51.511174,-2.641600 51.511178,-2.641592 51.511186,-2.641569 51.511203,-2.641559 51.511206,-2.641554 51.511216,-2.641547 51.511223,-2.641544 51.511229,-2.641533 51.511230,-2.641526 51.511239,-2.641512 51.511249,-2.641477 51.511287,-2.641472 51.511294,-2.641469 51.511309,-2.641470 51.511314,-2.641483 51.511321,-2.641491 51.511329,-2.641502 51.511330,-2.641604 51.511249,-2.641630 51.511233,-2.641641 51.511220,-2.641661 51.511205,-2.641761 51.511119,-2.641819 51.511065)))
point: POINT (-2.641643 51.511169)
notes: SYCAMORE,OAK,ASH
entry-date: 2005-02-21
start-date: 2005-02-21
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.