All Plivo API endpoints return a response in JSON format. An api_id in each response uniquely identifies each request. The API returns one of these HTTP status codes depending on whether the API call is successful or not.
| 200 | Request has been executed |
| 201 | Resource created |
| 202 | Resource changed |
| 204 | Resource deleted |
| 400 | A parameter is missing or is invalid |
| 401 | Authentication failed |
| 404 | Resource cannot be found |
| 405 | HTTP method is not allowed |
| 500 | Server error |