ref.govuk.error-summary · official-system
GOV.UK Error Summary Pattern
A complete, testable validation pattern from GOV.UK covering focus management, linked field-level errors, content structure, and implementation guidance for form error summaries. Evidence-rich with extensive usability research backing.
https://design-system.service.gov.uk/components/error-summary/
What this source teaches
- Implement error summary as a state-machine with focus management, linked errors, and field-level messages together.
- Use as a model for turning form validation into automated accessibility acceptance tests.
Where AwesomeDS applied it
rule.a11y.wcag-aa— Meet WCAG 2.2 AA by defaultrule.components.state-matrix— Ship full component state matrices
Implementations and artifacts
No directly linked artifacts.
Caveats & anti-imitation
Transfer the error-handling state machine and accessibility contracts; do not copy GOV.UK visual identity or crown branding.