{"format":"xrechnung","invoice_number":"INV-2026-001","issue_date":"2026-10-18","due_date":"2026-11-17","currency":"EUR","buyer_reference":"04011000-12345-34","seller":{"name":"Muster GmbH","vat_id":"DE123456789","street":"Hauptstr. 1","city":"Berlin","postal_code":"10115","country":"DE","email":"billing@muster.de","phone":"+49 30 1234","contact_name":"Anna Muster"},"buyer":{"name":"Kunde AG","vat_id":"DE811193231","street":"Ring 2","city":"Muenchen","postal_code":"80331","country":"DE","email":"ap@kunde.de"},"lines":[{"description":"Consulting","quantity":10,"unit":"HUR","unit_price":95.5,"vat_rate":19},{"description":"Book","quantity":2,"unit_price":12.99,"vat_rate":7}],"payment":{"iban":"DE89370400440532013000","terms":"30 days net"}}