Tree preservation zone

There is a problem

reference: 006/72 A1
name: Tree Preservation Order number TPO 6.72 Upwood House, Upwood
tree-preservation-order: 006/72
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.150694 52.429088,-0.150738 52.429097,-0.150761 52.429111,-0.151345 52.429106,-0.151450 52.429097,-0.151512 52.429061,-0.151664 52.428913,-0.151777 52.428780,-0.151818 52.428682,-0.152106 52.427739,-0.152106 52.427723,-0.151964 52.427477,-0.151906 52.427339,-0.151971 52.427153,-0.152006 52.427092,-0.152034 52.427083,-0.152145 52.427084,-0.152863 52.427150,-0.152954 52.427067,-0.152190 52.426980,-0.151673 52.426949,-0.151410 52.426905,-0.151260 52.426992,-0.151054 52.427088,-0.150835 52.427164,-0.150887 52.427209,-0.151092 52.427335,-0.150981 52.427478,-0.150913 52.427586,-0.150720 52.427827,-0.150682 52.427872,-0.150651 52.427862,-0.150577 52.427955,-0.150608 52.427965,-0.150550 52.428030,-0.149759 52.427800,-0.149264 52.428260,-0.149659 52.428481,-0.150139 52.428687,-0.150215 52.428807,-0.150204 52.428814,-0.150311 52.428868,-0.150303 52.428875,-0.150376 52.428922,-0.150363 52.428934,-0.150393 52.428978,-0.150462 52.429047,-0.150694 52.429088)))
point: POINT (-0.151034 52.428104)
notes
entry-date: 2007-02-05
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