Conservation area

There is a problem

reference: 4874
name: Swindon Prospect Place
designation-date: 1990-06-25
document-url: https://www.swindon.gov.uk/download/downloads/id/5245/conservation_area_appraisal_-_swindon_prospect_place.pdf
documentation-url
geometry: MULTIPOLYGON (((-1.778089 51.553554,-1.777702 51.553560,-1.777702 51.553580,-1.777652 51.553580,-1.777616 51.553609,-1.777617 51.553837,-1.777786 51.553834,-1.777812 51.553932,-1.777843 51.554104,-1.777973 51.554090,-1.778230 51.554519,-1.778356 51.554748,-1.778609 51.555247,-1.778946 51.555214,-1.779062 51.555222,-1.779945 51.555164,-1.780453 51.555119,-1.780554 51.555098,-1.780987 51.555052,-1.780950 51.554914,-1.780879 51.554798,-1.780886 51.554776,-1.780717 51.554507,-1.781407 51.554335,-1.781115 51.553905,-1.781118 51.553874,-1.781145 51.553832,-1.781176 51.553804,-1.781217 51.553782,-1.781138 51.553675,-1.781081 51.553618,-1.781042 51.553557,-1.780839 51.553070,-1.780395 51.553121,-1.780326 51.553156,-1.779011 51.553287,-1.778956 51.553292,-1.778953 51.553281,-1.778546 51.553284,-1.778545 51.553415,-1.778088 51.553424,-1.778089 51.553554)))
point: POINT (-1.779585 51.554151)
notes: Documents are a page separated from source URL. Interactive map available Extra documents are available.
organisation
entry-date: entry-date must be a real date
2025-04-01
start-date: 1990-06-25
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: