Conservation area

There is a problem

reference: 9234
name: East Blackdene
designation-date: 1993-01-01
document-url
documentation-url: https://www.durham.gov.uk/conservationareas
geometry: MULTIPOLYGON (((-2.187800 54.740254,-2.187784 54.740467,-2.187678 54.740464,-2.187655 54.740475,-2.187648 54.740503,-2.187657 54.740529,-2.187715 54.740612,-2.187797 54.740690,-2.187805 54.740902,-2.187651 54.740905,-2.187624 54.741035,-2.187486 54.741118,-2.187089 54.741080,-2.186494 54.741120,-2.185906 54.741058,-2.185475 54.741025,-2.185530 54.740944,-2.185564 54.740868,-2.185518 54.740863,-2.185418 54.740872,-2.185186 54.740913,-2.185024 54.740927,-2.184900 54.740918,-2.184096 54.740763,-2.183757 54.740980,-2.184223 54.741169,-2.184479 54.741310,-2.185026 54.741670,-2.185213 54.741802,-2.185600 54.742102,-2.185552 54.742296,-2.185812 54.742296,-2.186025 54.742405,-2.185857 54.742601,-2.185987 54.742603,-2.186216 54.742588,-2.186472 54.742560,-2.186904 54.742629,-2.186986 54.742617,-2.187051 54.742594,-2.187137 54.742544,-2.187197 54.742472,-2.187360 54.742030,-2.187536 54.741689,-2.187639 54.741591,-2.187814 54.741472,-2.187984 54.741215,-2.188200 54.741177,-2.188359 54.740836,-2.188579 54.740413,-2.188498 54.740349,-2.188334 54.740298,-2.188240 54.740392,-2.188127 54.740375,-2.188094 54.740259,-2.187800 54.740254)))
point: POINT (-2.186382 54.7415)
notes: No Appraisal document.
organisation
entry-date: entry-date must be a real date
2025-04-01
start-date: 1993-01-01
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: