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: 1/77/04-173
name: 16 Individual Trees 4 Groups 5 Areas
tree-preservation-order: undefined
1/77/04-173
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((0.190218 51.898286,0.190456 51.898558,0.190466 51.898580,0.190466 51.898587,0.190451 51.898619,0.190420 51.898650,0.190402 51.898662,0.190250 51.898710,0.190121 51.898728,0.190092 51.898787,0.190123 51.898818,0.190335 51.899112,0.190513 51.899348,0.190591 51.899481,0.190528 51.899503,0.189998 51.899649,0.189045 51.899871,0.188837 51.899921,0.188797 51.899930,0.188694 51.899911,0.188584 51.899672,0.188564 51.899633,0.188545 51.899599,0.188504 51.899533,0.188490 51.899517,0.188437 51.899419,0.188470 51.899223,0.188440 51.899090,0.188418 51.899027,0.188407 51.899003,0.188248 51.898692,0.188228 51.898645,0.188221 51.898624,0.188705 51.898527,0.188731 51.898520,0.188758 51.898472,0.188807 51.898426,0.188925 51.898406,0.189176 51.898355,0.189340 51.898329,0.189519 51.898289,0.189514 51.898275,0.189489 51.898125,0.189865 51.898032,0.189938 51.898001,0.190218 51.898286)))
point: POINT (0.189409 51.899016)
notes
entry-date: 1977-03-31
start-date: 1977-03-31
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.