Tree preservation zone

There is a problem

reference: 103
name
tree-preservation-order: Kingston University Kingston Hill Kingston Upon Thames
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.264754 51.429764,-0.264746 51.429757,-0.264720 51.429743,-0.264703 51.429736,-0.264617 51.429708,-0.264552 51.429689,-0.264481 51.429670,-0.264377 51.429647,-0.264201 51.429599,-0.264112 51.429579,-0.264049 51.429563,-0.263985 51.429550,-0.263876 51.429533,-0.263867 51.429563,-0.263849 51.429561,-0.263814 51.429576,-0.263790 51.429583,-0.263739 51.429590,-0.263676 51.429591,-0.263625 51.429582,-0.263575 51.429560,-0.263555 51.429547,-0.263532 51.429525,-0.263510 51.429521,-0.263522 51.429483,-0.263464 51.429474,-0.263405 51.429469,-0.263356 51.429469,-0.263340 51.429470,-0.263261 51.429484,-0.263232 51.429494,-0.263221 51.429501,-0.263203 51.429508,-0.263168 51.429519,-0.263135 51.429536,-0.263119 51.429550,-0.263114 51.429562,-0.263113 51.429569,-0.263113 51.429582,-0.263121 51.429601,-0.263134 51.429615,-0.263150 51.429625,-0.263162 51.429629,-0.263314 51.429661,-0.263556 51.429709,-0.263606 51.429718,-0.263677 51.429728,-0.263898 51.429739,-0.264267 51.429752,-0.264750 51.429773,-0.264754 51.429764)))
point: POINT (-0.263828 51.42964)
notes
entry-date: 2018-12-18
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