Tree preservation zone

There is a problem

reference: 0851
name
tree-preservation-order: 0851
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-2.456855 51.551717,-2.457122 51.551599,-2.457228 51.551532,-2.457575 51.551397,-2.455559 51.550670,-2.453114 51.549978,-2.451199 51.551338,-2.450320 51.551793,-2.449510 51.551128,-2.449212 51.550795,-2.446944 51.551705,-2.447164 51.552322,-2.447247 51.552506,-2.443958 51.553119,-2.444970 51.555286,-2.448207 51.554806,-2.448501 51.554772,-2.448608 51.554721,-2.448230 51.554439,-2.448868 51.554002,-2.450966 51.554796,-2.451047 51.554862,-2.452199 51.554891,-2.452333 51.554924,-2.452440 51.554924,-2.453134 51.554637,-2.453480 51.554435,-2.453854 51.554334,-2.453999 51.552747,-2.454426 51.552578,-2.454827 51.552460,-2.455148 51.552459,-2.455388 51.552391,-2.455815 51.552172,-2.455947 51.551971,-2.455973 51.551904,-2.456186 51.551770,-2.456427 51.551736,-2.456855 51.551717)))
point: POINT (-2.450465 51.552794)
notes
organisation
entry-date: 2025-06-12
start-date: start-date must be a real date
end-date

Your dataset is missing the start-date column.

The Tree preservation zone guidance explains how to fix the issue:

The date that the tree preservation order came into force, written in YYYY-MM-DD format.

Example: 1984-03-28