Tree preservation zone

There is a problem

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

reference: 89/00482/C
name: Mixenden hall, Moor End, Mixenden
tree-preservation-order: undefined
89/00482/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.918419 53.749887,-1.918600 53.749915,-1.918842 53.749909,-1.918975 53.749903,-1.919048 53.749975,-1.919059 53.749982,-1.919079 53.749991,-1.919103 53.749999,-1.919114 53.750001,-1.919142 53.750033,-1.919235 53.750109,-1.919354 53.750071,-1.919509 53.750016,-1.919664 53.749973,-1.919519 53.749816,-1.919468 53.749729,-1.919341 53.749525,-1.918402 53.749693,-1.918393 53.749696,-1.918384 53.749702,-1.918362 53.749751,-1.918358 53.749754,-1.918398 53.749761,-1.918414 53.749760,-1.918442 53.749768,-1.918471 53.749772,-1.918419 53.749887)))
point: POINT (-1.91906 53.749801)
notes: Elm, sycamore, holly, white beam, scout pine, oak, beech, horse chesnut
entry-date: 1990-02-05
start-date: 1990-02-05
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.