Tree preservation zone

There is a problem

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

reference: IBJDRUDNBB000
name: Brentry Hospital Charlton Road Brentry Bristol BS10 6JH
tree-preservation-order: undefined
355
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.615288 51.502462,-2.615377 51.502655,-2.615384 51.502719,-2.615405 51.502750,-2.615393 51.502771,-2.615384 51.502824,-2.615359 51.502865,-2.615326 51.502954,-2.615332 51.502970,-2.615203 51.503116,-2.615125 51.503457,-2.615105 51.503492,-2.615050 51.503647,-2.614995 51.503724,-2.614913 51.503815,-2.614762 51.503888,-2.614704 51.504000,-2.614641 51.504070,-2.614620 51.504135,-2.614649 51.504245,-2.614712 51.504294,-2.614812 51.504313,-2.614866 51.504343,-2.614873 51.504395,-2.614919 51.504435,-2.614928 51.504502,-2.614961 51.504529,-2.614977 51.504529,-2.614944 51.504382,-2.614936 51.504082,-2.614962 51.503946,-2.615147 51.503518,-2.615182 51.503417,-2.615213 51.503310,-2.615200 51.503253,-2.615276 51.503115,-2.615382 51.502958,-2.615446 51.502754,-2.615435 51.502698,-2.615340 51.502469,-2.615310 51.502459,-2.615288 51.502462)))
point: POINT (-2.61496 51.503798)
notes: HAWTHORN - Fagus sylvatica,ENGLISH ELM - Tillia platyphyllos,SYCAMORE - Fraxinus excelsior,LIME - Tilia x europaea
organisation
entry-date: 2011-10-11
start-date: 2011-10-11
end-date

Your dataset is missing the tree-preservation-order column.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.