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: ZZZZZTESRW144
name: South Bucks District Council (No.4) Tree Preservation Order 1994; dated 12/4/94; made under Sections
tree-preservation-order: undefined
TPO/SBDC/1994/04
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.649475 51.614463,-0.649503 51.614466,-0.649531 51.614466,-0.649553 51.614463,-0.649575 51.614454,-0.649593 51.614444,-0.649607 51.614430,-0.649615 51.614412,-0.649620 51.614389,-0.649618 51.614365,-0.649612 51.614348,-0.649605 51.614335,-0.649592 51.614322,-0.649576 51.614310,-0.649520 51.614289,-0.649472 51.614287,-0.649450 51.614291,-0.649434 51.614297,-0.649420 51.614307,-0.649395 51.614330,-0.649386 51.614346,-0.649381 51.614367,-0.649383 51.614380,-0.649389 51.614396,-0.649396 51.614409,-0.649410 51.614425,-0.649425 51.614439,-0.649443 51.614449,-0.649475 51.614463)))
point: POINT (-0.649502 51.614377)
notes
entry-date: 2017-07-04
start-date: 2017-07-04
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.