{"id":"3.3.4","name":"Error Prevention (Legal, Financial, Data)","level":"AA","principle":"Understandable","operational_summary":"IF a page creates a legal/financial commitment, modifies or deletes user-controllable stored data, or submits test responses, provide reversal OR checking with correction OR review/confirmation/correction before finalization. All three are not universally mandatory.","normative_source":"https://www.w3.org/TR/WCAG22/#error-prevention-legal-financial-data","understanding_source":"https://www.w3.org/WAI/WCAG22/Understanding/error-prevention-legal-financial-data.html","applicability_status":"NOT_EVALUATED","assessment_status":"NOT_TESTED","owner":null,"test_instance_ids":[],"exception_evidence_ids":[],"related_rules":[]}