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: tpo1750
name: Swanland No. 2 - 1974
tree-preservation-order: undefined
155
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.486734 53.738286,-0.487111 53.738303,-0.486754 53.737143,-0.485424 53.737089,-0.485109 53.737085,-0.483167 53.737003,-0.483045 53.737001,-0.482959 53.737071,-0.482970 53.737129,-0.483007 53.737168,-0.483059 53.737194,-0.483219 53.737203,-0.483535 53.737139,-0.483818 53.737232,-0.484090 53.737270,-0.484572 53.737281,-0.485247 53.737237,-0.485864 53.737228,-0.486095 53.737245,-0.486233 53.737247,-0.486306 53.737260,-0.486357 53.737296,-0.486406 53.737358,-0.486515 53.737625,-0.486581 53.737620,-0.486654 53.737803,-0.486603 53.737869,-0.486700 53.738170,-0.486738 53.738171,-0.486734 53.738286)))
point: POINT (-0.485492 53.737384)
notes
entry-date: 1974-11-13
start-date: 1974-11-13
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.