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: ZZZZZXESRW243
name: South Bucks District Council (No. 19) Tree Preservation Order 1994; dated 28/11/94; made under Secti
tree-preservation-order: undefined
TPO/SBDC/1994/19
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.540805 51.517392,-0.540838 51.517391,-0.540870 51.517386,-0.540900 51.517378,-0.540927 51.517367,-0.540950 51.517353,-0.540970 51.517336,-0.540984 51.517318,-0.540993 51.517298,-0.540996 51.517278,-0.540994 51.517258,-0.540986 51.517238,-0.540973 51.517219,-0.540955 51.517202,-0.540932 51.517188,-0.540906 51.517176,-0.540877 51.517167,-0.540845 51.517161,-0.540813 51.517159,-0.540780 51.517160,-0.540749 51.517165,-0.540719 51.517173,-0.540692 51.517185,-0.540668 51.517199,-0.540649 51.517215,-0.540634 51.517233,-0.540625 51.517253,-0.540622 51.517273,-0.540624 51.517294,-0.540632 51.517313,-0.540645 51.517332,-0.540663 51.517349,-0.540686 51.517364,-0.540712 51.517376,-0.540742 51.517385,-0.540773 51.517390,-0.540805 51.517392)))
point: POINT (-0.540809 51.517276)
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.