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: ZZZZZXESRW105
name: South Bucks District Council (No.5) Trees Preservation Order 1985 dated 17/6/85 made under Ss.60 & 6
tree-preservation-order: undefined
TPO/SBDC/1985/05
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.625890 51.615635,-0.625785 51.615730,-0.625745 51.615763,-0.625687 51.615816,-0.625650 51.615852,-0.625476 51.616032,-0.625442 51.616070,-0.625431 51.616086,-0.625372 51.616193,-0.625276 51.616379,-0.625197 51.616526,-0.625011 51.616563,-0.624914 51.616649,-0.624371 51.617146,-0.625563 51.617387,-0.626244 51.617527,-0.627271 51.617733,-0.627273 51.617728,-0.627274 51.617642,-0.627276 51.617634,-0.627275 51.617625,-0.627272 51.617621,-0.627273 51.617464,-0.627263 51.617220,-0.627383 51.617055,-0.627512 51.616872,-0.627523 51.616862,-0.627529 51.616850,-0.627640 51.616698,-0.627950 51.616284,-0.628055 51.616148,-0.627693 51.615972,-0.627668 51.615967,-0.627506 51.615959,-0.627507 51.615951,-0.627204 51.615934,-0.626980 51.615918,-0.626899 51.615910,-0.626836 51.615901,-0.626772 51.615889,-0.626652 51.615863,-0.626555 51.615837,-0.626457 51.615821,-0.626201 51.615730,-0.625890 51.615635)))
point: POINT (-0.626332 51.616685)
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.