Tree preservation zone

There is a problem

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

reference: 90/00501/C/3
name: Land opposite Callis Mill, Halifax Road, Hepden Bridge
tree-preservation-order: undefined
90/00501/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-2.044253 53.734879,-2.044220 53.734852,-2.044280 53.734823,-2.044206 53.734802,-2.043807 53.734969,-2.043001 53.735347,-2.042919 53.735388,-2.042900 53.735406,-2.042895 53.735427,-2.043061 53.735559,-2.043656 53.735311,-2.044226 53.735045,-2.044453 53.734925,-2.044476 53.734922,-2.044341 53.734856,-2.044291 53.734859,-2.044253 53.734879)),((-2.041019 53.736318,-2.041112 53.736273,-2.041149 53.736288,-2.041636 53.736116,-2.042074 53.735952,-2.042929 53.735606,-2.042944 53.735610,-2.042993 53.735589,-2.042831 53.735470,-2.042795 53.735461,-2.042765 53.735467,-2.042434 53.735643,-2.042255 53.735750,-2.042124 53.735806,-2.040906 53.736174,-2.041019 53.736318)),((-2.044768 53.734485,-2.044862 53.734549,-2.044405 53.734806,-2.044550 53.734880,-2.044742 53.734757,-2.045254 53.734465,-2.045653 53.734186,-2.045828 53.734079,-2.046531 53.733609,-2.047415 53.732983,-2.047327 53.732851,-2.047158 53.732986,-2.046696 53.733280,-2.045963 53.733787,-2.044768 53.734485)))
point: POINT (-2.044299 53.734754)
notes: Willow, sycamore, hawthorn, silver birch
entry-date: 1990-08-29
start-date: 1990-08-29
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.