Historic England

Conservation area

There is a problem

• 61 entries have reference values that are not unique

entry: undefined

• Endpoint URL: https://services-eu1.arcgis.com/ZOdPfBS3aqqDYPUQ/arcgis/rest/services/Conservation_Areas/FeatureServer/1
• Row: 7737
• reference: 0

  Reference must be unique in resource

How to fix this issue

Your dataset is missing the reference column.

The Conservation area guidance explains how to fix the issue:

reference

A reference or ID for each conservation area that is:

• unique within your dataset
• permanent - it doesn’t change when the dataset is updated If you don’t use a reference already, you will need to create one. This can be a short set of letters or numbers.

Example: CA01

How to improve Historic England’s data

1. Fix the errors indicated
2. Use the check service to make sure the data meets the standard
3. Publish the updated data on the endpoint URL