AddressBase Core Known Data Issues
This page provides the details of known data issues in the AddressBase Core product. Once resolved, details of a known data issue will be held on the page until the next release of the product.
Live known data issues
Incorrect GSS code values for address records in Sheffield and Barnsley.
An issue was encountered following the change in GSS codes for Sheffield and Barnsley that took effect on 1 April 2025. This has resulted in AB Core currently displaying the historic GSS code.
The previous and current GSS code changes as of 1 April 2025 are detailed in the table below:
Local Authority District
Current AB Core (historic) GSS Code
Correct GSS Code
(Effective from 1 April 2025)
Barnsley
E08000016
E08000038
Sheffield
E08000019
E08000039
10/06/25 - Under investigation
Last updated
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