Conservation area

There is a problem

reference: 2704
name: Leylands Estate
designation-date: 1994-01-06
document-url: https://www.derby.gov.uk/media/derbycitycouncil/contentassets/documents/environmentandplanning/conservation/DerbyCityCouncil-LeylandsConservationArea.pdf
documentation-url: https://www.derby.gov.uk/environment-and-planning/conservation/conservation-areas/
geometry: MULTIPOLYGON (((-1.494546 52.937164,-1.494395 52.937111,-1.494357 52.937078,-1.494346 52.937041,-1.494305 52.936619,-1.494257 52.936479,-1.494115 52.936271,-1.494042 52.936252,-1.493996 52.936174,-1.493533 52.936245,-1.492690 52.936329,-1.492061 52.936358,-1.491523 52.936351,-1.491442 52.936429,-1.491295 52.936523,-1.491227 52.936580,-1.491005 52.936856,-1.490806 52.937123,-1.490762 52.937154,-1.490624 52.937180,-1.490934 52.938027,-1.491493 52.938025,-1.491486 52.938104,-1.492531 52.938164,-1.493508 52.938240,-1.493803 52.938252,-1.493855 52.938193,-1.493894 52.938133,-1.494336 52.937424,-1.494546 52.937164)))
point: POINT (-1.492639 52.937238)
notes: Best Map is shown on page 4 of the appraisal document.
organisation
entry-date: entry-date must be a real date
2025-04-01
start-date: 1994-01-06
end-date

Your dataset is missing the entry-date column.

The Conservation area guidance explains how to fix the issue:

The date the record was last updated.

If the entity has never been updated, enter the same date as start-date.

Write in YYYY-MM-DD format.

Example:

2022-12-20

With dates, some data is better than no data, so: