Conservation area

There is a problem

reference: 5594
name: Hilton
designation-date: 1984-01-01
document-url
documentation-url: https://www.durham.gov.uk/conservationareas
geometry: MULTIPOLYGON (((-1.741316 54.590331,-1.741100 54.590857,-1.740572 54.590690,-1.740449 54.590988,-1.741271 54.591280,-1.741080 54.591727,-1.741653 54.591877,-1.741608 54.591948,-1.742000 54.592107,-1.742089 54.592300,-1.742225 54.592362,-1.742164 54.592441,-1.742653 54.592550,-1.742754 54.592389,-1.743615 54.592584,-1.743432 54.592874,-1.743643 54.592909,-1.744565 54.593166,-1.744656 54.593043,-1.745200 54.593205,-1.745502 54.593177,-1.745774 54.593247,-1.745484 54.593633,-1.745899 54.593718,-1.745999 54.593529,-1.746380 54.593038,-1.746637 54.592502,-1.746768 54.592363,-1.744936 54.591744,-1.743744 54.591355,-1.743356 54.591190,-1.743778 54.590723,-1.742883 54.590521,-1.742796 54.590624,-1.742373 54.590509,-1.742312 54.590588,-1.741949 54.590525,-1.741980 54.590420,-1.741316 54.590331)))
point: POINT (-1.743619 54.591914)
notes: No Appraisal document.
organisation
entry-date: entry-date must be a real date
2025-04-01
start-date: 1984-01-01
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: