{"api_version":"1","rule":{"code":"CODE-007","title":"Quantity unit codes","description":"Invoice and price-base quantity units must use UN/ECE Recommendation 20 with the Recommendation 21 extension.","severity":"error","ruleset":"code-lists","ruleset_version":"2026.08.3","profiles":["full","simplified"],"effective_from":"2026-08-15","effective_to":null,"source":{"id":"en16931-validation","name":"CEN/TC 434 \u2014 EN 16931 validation artefacts 1.3.16","url":"https://github.com/ConnectingEurope/eInvoicing-EN16931/releases/tag/validation-1.3.16","accessed":"2026-08-15"},"applicability":"See the rule description and selected invoice or technical profile.","remediation":"Add or correct the referenced structured invoice data.","rule_url":"/rules/CODE-007"}}