Tree preservation zone

There is a problem

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

reference: 30/C&W A1
name: Nos 121 to 129 and Elm Gates Harestone Hill Surrey Hills Clinic and Caterham School Caterham
tree-preservation-order: undefined
30/C&W
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-0.081990 51.272771,-0.081937 51.272089,-0.082149 51.272036,-0.082160 51.271992,-0.082451 51.271984,-0.082461 51.271946,-0.082549 51.271814,-0.082691 51.271682,-0.082504 51.271571,-0.082316 51.271511,-0.082211 51.271611,-0.082173 51.271686,-0.082169 51.271782,-0.082096 51.271762,-0.081974 51.271849,-0.081918 51.271899,-0.081898 51.271949,-0.081178 51.271759,-0.080196 51.271540,-0.080158 51.271571,-0.080419 51.271633,-0.080260 51.271744,-0.080268 51.271764,-0.080367 51.271810,-0.080493 51.271824,-0.080436 51.271887,-0.080452 51.271938,-0.080513 51.272003,-0.080649 51.272049,-0.080729 51.272057,-0.080840 51.272014,-0.080933 51.272200,-0.080939 51.272467,-0.080726 51.272572,-0.080733 51.272610,-0.081083 51.272521,-0.081231 51.272440,-0.081247 51.272498,-0.081464 51.272756,-0.081560 51.272846,-0.081990 51.272771)))
point: POINT (-0.081461 51.272116)
notes
organisation
entry-date: 1966-11-15
start-date: 1966-11-15
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.