Tree preservation zone

There is a problem

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

reference: 94/00820/C
name: Land Off Mill Lane, Mixenden
tree-preservation-order: undefined
94/00820/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.903416 53.758274,-1.903276 53.758179,-1.903207 53.758124,-1.903165 53.758038,-1.903191 53.757970,-1.903216 53.757946,-1.903299 53.757917,-1.903370 53.757909,-1.903465 53.757906,-1.903554 53.757879,-1.903602 53.757840,-1.903630 53.757772,-1.903633 53.757654,-1.903557 53.757573,-1.903137 53.757728,-1.903028 53.757766,-1.902998 53.757779,-1.902894 53.757815,-1.902854 53.757825,-1.902789 53.757837,-1.902894 53.758071,-1.902939 53.758143,-1.903034 53.758232,-1.903114 53.758288,-1.903199 53.758324,-1.903228 53.758330,-1.903327 53.758330,-1.903369 53.758323,-1.903415 53.758292,-1.903419 53.758281,-1.903416 53.758274)))
point: POINT (-1.903211 53.757928)
notes: Ash, beech, birch, cherry, hawthorn, horse chestnut, lime, sycamore
entry-date: 1994-03-10
start-date: 1994-03-10
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.