Import a customer invoice from an e-invoice file. The file must be a Factur-X PDF, a standalone UBL XML invoice, or a standalone CII XML invoice. Optionally provide invoice_options to pre-fill customer and line-level data. Invoice line e_invoice_line_id must match Factur-X BT-126 (LineID) or the UBL/CII line identifier.

⚠️ UBL and CII XML support is in alpha. A 201 response confirms the file was accepted and parsed, but invoices imported via standalone UBL or CII XML have two known limitations:

• The uploaded file is not displayed in the app — no document preview is generated yet for these formats.
• The invoice is not recognized as an electronic invoice within Pennylane.

Factur-X PDF remains the recommended format for production use.

ℹ️ This endpoint requires the following scope: customer_invoices:all

{
  "invoice_options": {
    "customer_id": 12,
    "invoice_lines": [
      {
        "ledger_account_id": 123,
        "product_id": 456
      }
    ]
  },
  "override_invoice_lines": [
    {
      "currency_amount": "50.00",
      "currency_tax": "10.00",
      "vat_rate": "FR_200",
      "ledger_account_id": 706,
      "quantity": 1,
      "raw_currency_unit_price": "50.00",
      "product_id": 42
    }
  ]
}

{
  "id": 42
}