Tree preservation zone

There is a problem

tree-preservation-order column must match the reference field in the tree preservation order dataset

reference: TPO141.A1
name: Standing within the area numbered A1 on the map.
tree-preservation-order: undefined
TPO141
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.901416 53.426676,-2.901193 53.426749,-2.901019 53.426803,-2.900900 53.426843,-2.900897 53.426846,-2.900922 53.426884,-2.900948 53.426905,-2.901085 53.427006,-2.900958 53.427056,-2.901224 53.427335,-2.901662 53.427187,-2.901653 53.427178,-2.901731 53.427153,-2.901739 53.427162,-2.902492 53.426906,-2.902685 53.426842,-2.902912 53.426763,-2.902995 53.426739,-2.903103 53.426705,-2.902963 53.426556,-2.903058 53.426533,-2.902791 53.426234,-2.902510 53.426323,-2.902512 53.426325,-2.902460 53.426339,-2.902281 53.426399,-2.902258 53.426406,-2.902257 53.426405,-2.902052 53.426472,-2.901974 53.426496,-2.901690 53.426588,-2.901691 53.426590,-2.901644 53.426603,-2.901416 53.426676)))
point: POINT (-2.901996 53.426781)
notes: The several tree of whatever species situated within area A1 on map.
entry-date: 1974-04-25
start-date: 1975-11-12
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.