Tree preservation zone

There is a problem

124 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: 1338
name: Boland House & Counting House St Thomas Street SE1
tree-preservation-order: undefined
687
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-0.087164 51.504276,-0.087267 51.504329,-0.087917 51.504589,-0.088196 51.504615,-0.088536 51.504240,-0.088590 51.504231,-0.088956 51.503901,-0.089040 51.503889,-0.089260 51.503936,-0.089330 51.503824,-0.089871 51.503976,-0.090063 51.504039,-0.090180 51.504086,-0.090240 51.504062,-0.090445 51.504146,-0.090545 51.504077,-0.090475 51.504013,-0.090774 51.503365,-0.090628 51.503269,-0.090525 51.503227,-0.090197 51.503461,-0.090124 51.503406,-0.090083 51.503471,-0.090007 51.503432,-0.089799 51.503639,-0.089145 51.503296,-0.089457 51.503029,-0.089073 51.502821,-0.089274 51.502543,-0.089321 51.502528,-0.088992 51.502412,-0.088883 51.502390,-0.088341 51.502206,-0.088263 51.502261,-0.088282 51.502350,-0.088384 51.502418,-0.088428 51.502498,-0.088341 51.502555,-0.088353 51.502733,-0.088064 51.503184,-0.087794 51.503636,-0.087164 51.504276)))
point: POINT (-0.088799 51.503554)
notes
organisation
entry-date: 2023-05-03
start-date: 2023-05-03
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.