{
    "invoice_header": {
        "invoice_number": "NV-2026-001",
        "invoice_date": "2026-02-16",
        "currency": "EUR",
        "document_type": "INVOIC",
        "sap_idoc_type": "INVOIC02"
    },
    "vendor_data": {
        "name": "Corporate Vendor GmbH",
        "vat_id": "DE123456789",
        "tax_id": "12/345/67890",
        "address": {
            "street": "Enterprise Way 1",
            "city": "Berlin",
            "postal_code": "10115",
            "country": "DE"
        }
    },
    "customer_data": {
        "name": "Enterprise Client SE",
        "vat_id": "PL9876543210",
        "leitweg_id": "991:12345-67890-12",
        "address": {
            "street": "Client Plaza 42",
            "city": "Warsaw",
            "postal_code": "00-001",
            "country": "PL"
        },
        "customer_mapping_id": "SAP-VEN-00991"
    },
    "dach_identifiers": {
        "austria": {
            "atu_number": "ATU12345678",
            "firmenbuch_nr": "FN 123456a",
            "ebinterface_version": "6.1"
        },
        "switzerland": {
            "uid": "CHE-123.456.789",
            "mwst_nummer": "CHE-123.456.789 MWST",
            "qr_iban": "CH4431999123000889012",
            "qr_reference": "210000000003139471430009017"
        }
    },
    "payment_details": {
        "iban": "DE12345678901234567890",
        "bic": "EXAMPLEDED1",
        "account_holder": "Corporate Vendor GmbH",
        "payment_terms": "NET30"
    },
    "line_items": [
        {
            "item_number": 1,
            "description": "Professional Services - SAP Integration",
            "quantity": 40,
            "unit": "H",
            "price_unit": 150.00,
            "vat_rate": 23.0,
            "tax_category": "S",
            "net_amount": 6000.00
        }
    ],
    "totals": {
        "total_net": 6000.00,
        "total_vat": 1380.00,
        "total_gross": 7380.00
    }
}