Tree preservation zone

There is a problem

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

reference: 90/00545/C
name: Land off Portland road, Halifax
tree-preservation-order: undefined
90/00545/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.856284 53.728863,-1.856286 53.728878,-1.856289 53.728882,-1.856300 53.728888,-1.856320 53.728894,-1.856334 53.728895,-1.856364 53.728891,-1.856524 53.728879,-1.856581 53.728880,-1.856653 53.728883,-1.856791 53.728904,-1.856904 53.728939,-1.857012 53.728990,-1.857083 53.729043,-1.857134 53.729112,-1.857156 53.729152,-1.857172 53.729195,-1.857178 53.729261,-1.857172 53.729331,-1.857150 53.729410,-1.857126 53.729458,-1.857091 53.729506,-1.857066 53.729548,-1.857031 53.729601,-1.856958 53.729671,-1.857026 53.729701,-1.857388 53.729353,-1.857599 53.729142,-1.857637 53.729095,-1.857670 53.729060,-1.856640 53.728608,-1.856620 53.728621,-1.856444 53.728753,-1.856363 53.728810,-1.856284 53.728863)),((-1.855792 53.729093,-1.855795 53.729099,-1.855797 53.729100,-1.855810 53.729102,-1.855819 53.729099,-1.855822 53.729094,-1.855822 53.729091,-1.855819 53.729087,-1.855815 53.729085,-1.855802 53.729084,-1.855795 53.729087,-1.855792 53.729093)),((-1.856109 53.729309,-1.856113 53.729315,-1.856122 53.729318,-1.856132 53.729317,-1.856140 53.729311,-1.856140 53.729307,-1.856136 53.729303,-1.856127 53.729300,-1.856115 53.729302,-1.856111 53.729304,-1.856109 53.729309)))
point: POINT (-1.857068 53.72903)
notes: Willow, sycamore
entry-date: 1990-09-26
start-date: 1990-09-26
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.