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: ZZZZZWESRW928
name: South Bucks District Council (No.57) Tree Preservation Order 1999; dated 25/10/99; made under Sectio
tree-preservation-order: undefined
TPO/SBDC/1999/57
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.560780 51.582690,-0.560786 51.582683,-0.560790 51.582675,-0.560792 51.582667,-0.560791 51.582658,-0.560789 51.582650,-0.560784 51.582642,-0.560778 51.582635,-0.560769 51.582629,-0.560748 51.582619,-0.560735 51.582616,-0.560709 51.582614,-0.560651 51.582623,-0.560596 51.582638,-0.560541 51.582674,-0.560535 51.582685,-0.560506 51.582697,-0.560491 51.582709,-0.560486 51.582715,-0.560481 51.582730,-0.560482 51.582738,-0.560484 51.582746,-0.560495 51.582760,-0.560513 51.582770,-0.560524 51.582774,-0.560548 51.582779,-0.560573 51.582778,-0.560585 51.582775,-0.560625 51.582758,-0.560646 51.582735,-0.560742 51.582710,-0.560760 51.582703,-0.560780 51.582690)))
point: POINT (-0.560635 51.582693)
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.