Tree preservation zone

There is a problem

reference: 419
name
tree-preservation-order: Former Mod Government Offices Leatherhead Road Chessington
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.312897 51.356604,-0.312883 51.356616,-0.312887 51.356634,-0.312887 51.356663,-0.312883 51.356701,-0.312841 51.356809,-0.312803 51.356850,-0.312788 51.356859,-0.312764 51.356880,-0.312748 51.356891,-0.312690 51.356937,-0.312667 51.356963,-0.312654 51.356991,-0.312602 51.357088,-0.312566 51.357163,-0.312531 51.357205,-0.312493 51.357262,-0.312359 51.357474,-0.312344 51.357505,-0.312304 51.357602,-0.312270 51.357665,-0.312158 51.357803,-0.312231 51.357825,-0.312592 51.357393,-0.312900 51.357091,-0.312931 51.357067,-0.312989 51.357030,-0.312941 51.356953,-0.312866 51.356848,-0.312863 51.356827,-0.312871 51.356783,-0.312879 51.356760,-0.312896 51.356744,-0.312995 51.356691,-0.313016 51.356678,-0.313030 51.356656,-0.313030 51.356647,-0.313027 51.356635,-0.312986 51.356571,-0.312897 51.356604)))
point: POINT (-0.312648 51.357192)
notes
entry-date: 2023-09-05
start-date: start-date must be a real date
end-date

Your data is missing a start-date.

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