Tree preservation zone

There is a problem

tree-preservation-order column must match the reference field in the tree preservation order dataset

reference: 8/GOD W5
name: On the north side of Southlands Lane and on the east side of Grove Road in the parish of Oxted
tree-preservation-order: undefined
8/GOD
tree-preservation-zone-type: woodland
geometry: MULTIPOLYGON (((-0.017926 51.238374,-0.018414 51.238914,-0.018986 51.239238,-0.019555 51.239599,-0.019986 51.239943,-0.020011 51.239929,-0.020086 51.239981,-0.021040 51.239661,-0.021007 51.239403,-0.020996 51.239233,-0.020959 51.239048,-0.020841 51.238817,-0.020750 51.238578,-0.020691 51.238251,-0.020595 51.237937,-0.020564 51.237661,-0.020596 51.237333,-0.020680 51.237087,-0.020713 51.236723,-0.020804 51.236321,-0.020833 51.236074,-0.020773 51.235773,-0.020618 51.235549,-0.020587 51.235419,-0.020356 51.235246,-0.019711 51.235404,-0.018204 51.236010,-0.017422 51.236296,-0.016733 51.236597,-0.016247 51.236849,-0.016107 51.237189,-0.016531 51.237094,-0.017107 51.236869,-0.017682 51.236697,-0.018334 51.236382,-0.019317 51.236047,-0.019493 51.236221,-0.019695 51.236600,-0.019948 51.237101,-0.020172 51.237417,-0.020309 51.237757,-0.019884 51.237886,-0.018286 51.238260,-0.018147 51.238313,-0.018111 51.238312,-0.017926 51.238374)))
point: POINT (-0.019534 51.237618)
notes
organisation
entry-date: 1951-04-20
start-date: 1951-04-20
end-date

Your dataset is missing the tree-preservation-order column.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.