Uphold API uses the following error codes:
| Code | Meaning |
|---|---|
| 400 | Bad Request |
| 401 | Unauthorized |
| 403 | Forbidden |
| 404 | Not Found |
| 409 | Conflict |
| 412 | Precondition Failed |
| 416 | Range Not Satisfiable |
| 429 | Too Many Requests |
| 500 | Internal Server Error |
| 503 | Service Unavailable |