Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: 1/76/61-200
name: 16 Individual 3 Areas
tree-preservation-order: undefined
1/76/61-200
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.410892 51.894172,0.410906 51.894173,0.410926 51.894179,0.410944 51.894193,0.410949 51.894207,0.410947 51.894216,0.410942 51.894224,0.410929 51.894235,0.410917 51.894240,0.410896 51.894244,0.410867 51.894241,0.410844 51.894230,0.410834 51.894218,0.410832 51.894213,0.410833 51.894200,0.410838 51.894191,0.410846 51.894184,0.410857 51.894178,0.410870 51.894174,0.410892 51.894172)),((0.404810 51.900503,0.404832 51.900506,0.404850 51.900514,0.404859 51.900521,0.404865 51.900529,0.404867 51.900538,0.404867 51.900543,0.404861 51.900556,0.404853 51.900563,0.404841 51.900569,0.404828 51.900573,0.404814 51.900575,0.404799 51.900575,0.404786 51.900573,0.404767 51.900565,0.404758 51.900558,0.404751 51.900545,0.404750 51.900536,0.404754 51.900527,0.404760 51.900519,0.404770 51.900512,0.404782 51.900508,0.404796 51.900504,0.404810 51.900503)))
point: POINT (0.407839 51.897384)
notes
entry-date: 1976-10-26
start-date: 1976-10-26
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.