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: tpo85
name: Howden No. 10 - 2004
tree-preservation-order: undefined
809
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.887913 53.751506,-0.888004 53.751501,-0.888025 53.751534,-0.888711 53.751605,-0.888728 53.751568,-0.888512 53.751465,-0.888509 53.751421,-0.888541 53.751402,-0.888598 53.751397,-0.888646 53.751404,-0.888646 53.751371,-0.888725 53.751204,-0.888768 53.750928,-0.888787 53.750869,-0.888780 53.750844,-0.888806 53.750773,-0.888824 53.750732,-0.888873 53.750753,-0.888896 53.750701,-0.888967 53.750462,-0.889090 53.750242,-0.889037 53.750211,-0.888413 53.749935,-0.888237 53.749925,-0.887694 53.750114,-0.887212 53.750175,-0.887136 53.750205,-0.887116 53.750260,-0.887092 53.750369,-0.887084 53.750496,-0.887110 53.750685,-0.887072 53.750972,-0.887043 53.751043,-0.887068 53.751063,-0.887147 53.751098,-0.887666 53.751316,-0.887771 53.751415,-0.887913 53.751506)))
point: POINT (-0.888046 53.750712)
notes
entry-date: 2004-07-27
start-date: 2004-07-27
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.