Timeout error outcome

In this example, operation outcome resource is having an timeout error during the validation operation.

{
    "resourceType": "OperationOutcome",
    "id": "27a70f93-5541-42fb-bd73-8353b98719fc",
    "issue":  [
        {
            "severity": "error",
            "code": "timeout",
            "diagnostics": "<An internal timeout has occurred>"
        }
    ]
}