Tree preservation zone

There is a problem

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

reference: 93/00758/C/2
name: Land at Free School Lane/ Heath Road, Halifax
tree-preservation-order: undefined
93/00758/C
tree-preservation-zone-type: group
geometry: MULTIPOLYGON (((-1.861953 53.712275,-1.861764 53.712292,-1.861774 53.712315,-1.861793 53.712313,-1.861843 53.712314,-1.861913 53.712323,-1.861934 53.712327,-1.861952 53.712334,-1.862022 53.712355,-1.862149 53.712418,-1.862170 53.712427,-1.862167 53.712406,-1.862151 53.712370,-1.862121 53.712327,-1.862093 53.712293,-1.861991 53.712291,-1.861966 53.712278,-1.861953 53.712275)),((-1.862017 53.712655,-1.861884 53.712411,-1.861850 53.712339,-1.861785 53.712339,-1.861836 53.712449,-1.861888 53.712568,-1.861947 53.712695,-1.861958 53.712725,-1.861963 53.712731,-1.861979 53.712740,-1.862000 53.712747,-1.862011 53.712749,-1.862046 53.712750,-1.862308 53.712720,-1.862017 53.712655)),((-1.862332 53.712697,-1.862334 53.712702,-1.862342 53.712706,-1.862353 53.712706,-1.862361 53.712702,-1.862363 53.712697,-1.862361 53.712693,-1.862348 53.712688,-1.862338 53.712690,-1.862333 53.712694,-1.862332 53.712697)))
point: POINT (-1.86199 53.712512)
notes: Cherry, holly, sycamore
entry-date: 1993-08-06
start-date: 1993-08-06
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.