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: ZZZZZSESRW364
name: Beaconsfield District Council (No.9) Tree Preservation Order 1975; under Ss.60 & 61 of the Town and
tree-preservation-order: undefined
TPO/BD/1975/09
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.694105 51.530095,-0.694124 51.530086,-0.694144 51.529943,-0.694139 51.529907,-0.694145 51.529846,-0.694123 51.529736,-0.694118 51.529641,-0.694070 51.529304,-0.693240 51.529351,-0.693187 51.529021,-0.693263 51.528989,-0.693256 51.528944,-0.692956 51.528962,-0.692930 51.528946,-0.692124 51.528985,-0.692033 51.529004,-0.691954 51.529037,-0.691944 51.529042,-0.691947 51.529055,-0.691914 51.529077,-0.691897 51.529333,-0.691913 51.529439,-0.691941 51.529538,-0.692043 51.529770,-0.692430 51.529748,-0.692472 51.529803,-0.692486 51.529884,-0.692523 51.529882,-0.692534 51.529949,-0.692555 51.529948,-0.692557 51.529958,-0.692807 51.529952,-0.692935 51.530198,-0.693439 51.530175,-0.693550 51.530163,-0.693908 51.530062,-0.694105 51.530095)))
point: POINT (-0.693019 51.529563)
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.