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: IC9C1UDNBB000
name: Blaise Dell Hallen Road Bristol
tree-preservation-order: undefined
229
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.641378 51.511428,-2.641339 51.511426,-2.641316 51.511431,-2.641299 51.511439,-2.641284 51.511440,-2.641282 51.511444,-2.641217 51.511471,-2.641209 51.511483,-2.641199 51.511490,-2.641175 51.511497,-2.641161 51.511505,-2.641159 51.511511,-2.641153 51.511520,-2.641143 51.511525,-2.641132 51.511537,-2.641124 51.511552,-2.641116 51.511563,-2.641107 51.511567,-2.641098 51.511576,-2.641086 51.511583,-2.641076 51.511583,-2.641069 51.511587,-2.641056 51.511598,-2.641045 51.511606,-2.641035 51.511611,-2.641010 51.511630,-2.641007 51.511635,-2.640999 51.511641,-2.640988 51.511654,-2.640969 51.511665,-2.640955 51.511671,-2.640937 51.511684,-2.640935 51.511696,-2.640937 51.511703,-2.640950 51.511712,-2.640959 51.511721,-2.640978 51.511731,-2.640993 51.511732,-2.641378 51.511428)))
point: POINT (-2.641137 51.511578)
notes: SYCAMORE
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.