UKSEF Validation?
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Shaun Curran
Aug 11, 2025, 7:45:46 AMAug 11
to Arelle-users
Hi
I can't see any mention of UKSEF validation currently in Arelle, is it in the pipeline/roadmap?
UKSEF is a multi-target framework for the UK, similar to the DKGAAP framework. It allows both an ESEF XBRL target and a local UK XBRL target document.
The UK's Companies House has mandated this method for listed groups to file their ESEF and also to file their local UK company accounts..The mandate will come in for filing after 1 April 2027
I'm happy to get involved with any testing opportunities.
Best wishes, Shaun
Austin Matherne
Aug 11, 2025, 4:41:00 PMAug 11
to Arelle-users
Hi Shaun,
Thanks for reaching out and for your interest in contributing.
Right now, Arelle supports ESEF specific validation rules for the ESEF target, but we haven’t yet implemented the custom validation rules from the latest FRC XBRL Tagging Guide. UKSEF support is on our roadmap, but as a volunteer-driven project, I can’t give a firm timeline. Our current focus is on EDINET validations.
That said, your offer to help with testing is very welcome, I'll definitely keep you in mind once we begin UKSEF related work.
Best regards,
Austin
Thanks for reaching out and for your interest in contributing.
Right now, Arelle supports ESEF specific validation rules for the ESEF target, but we haven’t yet implemented the custom validation rules from the latest FRC XBRL Tagging Guide. UKSEF support is on our roadmap, but as a volunteer-driven project, I can’t give a firm timeline. Our current focus is on EDINET validations.
That said, your offer to help with testing is very welcome, I'll definitely keep you in mind once we begin UKSEF related work.
Best regards,
Austin
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