# API errors
Typesense API uses standard HTTP response codes to indicate the success or failure of a request.
Codes in the 2xx range indicate success, codes in the 4xx range indicate an error given the information provided (e.g. a required parameter was omitted), and codes in the 5xx range indicate an error with the Typesense service itself.
| Parameter | Required |
|---|---|
| 400 | Bad Request - The request could not be understood due to malformed syntax. |
| 401 | Unauthorized - Your API key is wrong. |
| 404 | Not Found - The requested resource is not found. |
| 409 | Conflict - When a resource already exists. |
| 422 | Unprocessable Entity - Request is well-formed, but cannot be processed. |
| 503 | Service Unavailable - We’re temporarily offline. Please try again later. |
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Last Updated: 6/14/2021, 5:46:29 PM