Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: ZZZZZXESRW155
name: South Bucks District Council (No. 14) Tree Preservation Order 1991; dated 3/12/91; made under Sectio
tree-preservation-order: undefined
TPO/SBDC/1991/14
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.535346 51.570196,-0.535622 51.570277,-0.536121 51.570474,-0.536176 51.570377,-0.536146 51.570279,-0.536173 51.570236,-0.536119 51.570224,-0.535972 51.570136,-0.536260 51.569924,-0.536430 51.570022,-0.536695 51.569628,-0.536893 51.569290,-0.537003 51.569134,-0.536385 51.568817,-0.536241 51.568678,-0.536260 51.568620,-0.536146 51.568553,-0.536041 51.568474,-0.535967 51.568402,-0.535904 51.568325,-0.535866 51.568268,-0.535851 51.568225,-0.535914 51.568065,-0.536001 51.567946,-0.536002 51.567893,-0.535520 51.567302,-0.535425 51.567200,-0.534608 51.566796,-0.534426 51.566822,-0.534621 51.567340,-0.534688 51.567690,-0.534900 51.568410,-0.534984 51.568622,-0.535150 51.568951,-0.535207 51.569548,-0.535234 51.569701,-0.535346 51.570196)))
point: POINT (-0.535627 51.568714)
notes
organisation
entry-date: 2017-07-04
start-date: 2017-07-04
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.