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: ZZZZDVESXE627
name: No 8 of 1961
tree-preservation-order: undefined
TPO/1961/008
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.655789 51.619270,-0.656187 51.619470,-0.657203 51.618811,-0.657004 51.618583,-0.656942 51.618567,-0.656953 51.618559,-0.656660 51.618378,-0.656445 51.618225,-0.656423 51.618211,-0.656374 51.618182,-0.656298 51.618142,-0.656179 51.618076,-0.656106 51.618038,-0.656033 51.617993,-0.655960 51.617951,-0.655924 51.617933,-0.655898 51.617922,-0.655829 51.617899,-0.655612 51.617846,-0.655592 51.617833,-0.655570 51.617823,-0.655523 51.617807,-0.655491 51.617800,-0.655424 51.617790,-0.655331 51.617781,-0.655148 51.617729,-0.654813 51.617639,-0.654801 51.617637,-0.654791 51.617638,-0.654747 51.617635,-0.654704 51.617627,-0.654685 51.617620,-0.654483 51.617509,-0.654454 51.617500,-0.654240 51.617663,-0.654279 51.617708,-0.654307 51.617737,-0.654355 51.617780,-0.654418 51.617832,-0.654545 51.617920,-0.654679 51.618005,-0.654736 51.618038,-0.654848 51.618098,-0.655262 51.618294,-0.655366 51.618341,-0.655408 51.618367,-0.655424 51.618380,-0.655439 51.618395,-0.655454 51.618415,-0.655458 51.618423,-0.655462 51.618438,-0.655482 51.618527,-0.655563 51.618864,-0.655625 51.619115,-0.655641 51.619145,-0.655783 51.619273,-0.655789 51.619270)))
point: POINT (-0.655876 51.618487)
notes
entry-date: 2010-02-18
start-date: 2010-02-18
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.