An invoice can be retrieved as a base64 encoded PDF by using the following URL and specifying the invoice ID.
| Method | URL |
| GET | https://api.fairwarningsoftware.com/v1.1.1/user/invoice/[invoice-id] |
| Status | Response |
| 200 |
{ |
| 401 | {"error":"The API keys provided are invalid."} |
| 403 | {"error":"API keys are missing."} |
| 500 | {"error": <custom error>} |
| Field | Type | Description |
| filename | string | The name of the PDF file. |
| base64 | string | The PDF file as a base64 encoded string. |