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Attachments

Attachments (e.g. invoice PDF, CMR, proof of delivery) can be included in two ways:

  • In JSON payloads: Use the attachments array, where each item contains a document object with base64, content_type, document_type, and filename fields.
  • In multipart uploads: Send the JSON invoice data as the first part, followed by file attachments as additional parts.

See the e-invoicing webhook endpoint for detailed examples of all formats and attachment handling.