API error responses

> **Note**\ > The following error codes are commonly returned by Blueshift APIs. Depending on the specific endpoint, not all may apply.

200Campaign unarchived successfully.

403Forbidden - The API key does not have sufficient permissions to perform this action.

422Unprocessable Entity - The request was well-formed but contains semantic errors.

429Too Many Requests - The request limit has been exceeded. Reduce request frequency.

500Internal Server Error - An unexpected server error occurred. Contact support if the issue persists.

502Bad Gateway - The server received an invalid response. Retry the request.

503Service Unavailable - The service is temporarily unavailable. Try again later.

504Gateway Timeout - The server took too long to respond. Retry the request with exponential backoff.