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: 90/00490/C/2
name: Lower Green House, Green Lane, Brighouse
tree-preservation-order: undefined
90/00490/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.797842 53.716591,-1.797807 53.716555,-1.797779 53.716566,-1.797789 53.716607,-1.797842 53.716591)),((-1.797904 53.716570,-1.797858 53.716507,-1.797903 53.716494,-1.797900 53.716485,-1.797828 53.716504,-1.797881 53.716577,-1.797904 53.716570)),((-1.797815 53.716741,-1.797817 53.716745,-1.797825 53.716749,-1.797831 53.716750,-1.797844 53.716745,-1.797846 53.716739,-1.797844 53.716736,-1.797836 53.716732,-1.797826 53.716732,-1.797816 53.716737,-1.797815 53.716741)),((-1.797649 53.716713,-1.797652 53.716719,-1.797659 53.716722,-1.797672 53.716721,-1.797676 53.716719,-1.797679 53.716715,-1.797678 53.716710,-1.797674 53.716706,-1.797664 53.716704,-1.797654 53.716706,-1.797649 53.716713)),((-1.797694 53.716704,-1.797696 53.716709,-1.797704 53.716713,-1.797715 53.716713,-1.797723 53.716709,-1.797725 53.716706,-1.797723 53.716700,-1.797710 53.716695,-1.797704 53.716696,-1.797696 53.716700,-1.797694 53.716704)))
point: POINT (-1.797818 53.716588)
notes: Sycamore
entry-date: 1990-07-20
start-date: 1990-07-20
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.