{"api_version":"1","rule":{"code":"IE-CN-002","title":"Original invoice reference","description":"A credit note must refer to the original invoice.","severity":"error","ruleset":"irish-vat-invoice","ruleset_version":"2026.08.2","profiles":["full"],"effective_from":"2026-08-15","effective_to":null,"source":{"id":"revenue-credit-note","name":"Irish Revenue \u2014 information required on VAT credit notes","url":"https://www.revenue.ie/en/vat/vat-records-invoices-credit-notes/credit-notes/information-required.aspx","accessed":"2026-08-15"},"applicability":"Applied to UBL CreditNote documents and canonical documents identified as credit notes.","remediation":"State the credit reason and connect the credit note to the affected original invoice as indicated.","rule_url":"/rules/IE-CN-002"}}