Downloading an object states package

{
    "error": {
        "code": "MigrationSvc_017",
        "message": "Export request with identifier [6GnKs0tkLHdE6Hpd5nsWD] doesnt exist.",
        "debugMessage": "Export request with identifier [6GnKs0tkLHdE6Hpd5nsWD] doesnt exist.",
        "requestId": "0FrZZzXiEoafqCZUPqJsYd"
    }
}