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: ZZZZZSESRW480
name: South Bucks District Council (No. 12) Tree Preservation Order 1994; dated 24/8/94; made under Sectio
tree-preservation-order: undefined
TPO/SBDC/1994/12
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.614186 51.569689,-0.614700 51.569835,-0.614895 51.569882,-0.615133 51.569937,-0.615244 51.569938,-0.615306 51.569956,-0.615352 51.569985,-0.615416 51.570009,-0.615657 51.570055,-0.615979 51.570142,-0.616239 51.570197,-0.616725 51.570320,-0.617122 51.570434,-0.617170 51.570364,-0.617206 51.570257,-0.617333 51.569702,-0.617415 51.569251,-0.617503 51.569044,-0.617685 51.568767,-0.617685 51.568760,-0.617267 51.568413,-0.617189 51.568377,-0.617174 51.568329,-0.617189 51.568303,-0.617183 51.568158,-0.617194 51.568057,-0.617232 51.567902,-0.617445 51.567648,-0.617479 51.567618,-0.614566 51.567462,-0.614445 51.568024,-0.614362 51.568607,-0.614289 51.568948,-0.614190 51.569474,-0.614136 51.569677,-0.614186 51.569689)))
point: POINT (-0.615907 51.568844)
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.