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: ZZZZDUESXE887
name: The Chiltern District Council (Land at Seer Green House, Longbottom Lane, Seer Green) Tree Preservat
tree-preservation-order: undefined
TPO/1987/019
tree-preservation-zone-type
geometry: MULTIPOLYGON (((-0.612003 51.612729,-0.612024 51.612726,-0.612112 51.612644,-0.612167 51.612589,-0.612197 51.612540,-0.612217 51.612485,-0.612234 51.612457,-0.612247 51.612411,-0.612246 51.612395,-0.612109 51.612361,-0.611982 51.612338,-0.611911 51.612327,-0.611841 51.612318,-0.611733 51.612313,-0.611547 51.612301,-0.611504 51.612295,-0.611382 51.612274,-0.611202 51.612230,-0.611167 51.612229,-0.611090 51.612231,-0.611020 51.612253,-0.610957 51.612286,-0.610900 51.612347,-0.610875 51.612385,-0.610854 51.612422,-0.610852 51.612458,-0.610882 51.612481,-0.610913 51.612486,-0.610942 51.612487,-0.610971 51.612483,-0.611007 51.612486,-0.611046 51.612493,-0.611089 51.612507,-0.611176 51.612552,-0.611225 51.612558,-0.611270 51.612552,-0.611293 51.612544,-0.611335 51.612510,-0.611364 51.612491,-0.611391 51.612487,-0.611441 51.612493,-0.611587 51.612523,-0.611666 51.612534,-0.611707 51.612542,-0.611768 51.612558,-0.611786 51.612587,-0.611798 51.612627,-0.611802 51.612650,-0.611812 51.612669,-0.611844 51.612691,-0.611900 51.612716,-0.611944 51.612726,-0.612003 51.612729)))
point: POINT (-0.611585 51.612442)
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.