post
https://api-test.envia.com/ship/uploadDocuments
Upload customs-related documents (such as a commercial invoice) to an existing international shipment so the carrier can process customs clearance.
When to use: Call this endpoint after generating a label and a commercial invoice for an international shipment. Some carriers require documents to be uploaded separately before the package can clear customs.
Prerequisites:
- Valid JWT authentication token (Bearer)
- A carrier ID and tracking number from a previously generated international shipment
- One or more document URLs (e.g., the commercial invoice PDF returned by
/ship/commercial-invoice)
Key behaviors:
- Accepts documents as URLs pointing to PDF files
- Supported carriers include FedEx, DHL, and UPS (carrier support may vary by origin country)
- Returns a confirmation indicating whether the documents were successfully attached to the shipment
- Documents must be uploaded before the carrier's cutoff time for the shipment to avoid delays