Exception Operation outcome

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

{
"resourceType": "OperationOutcome",
"id": "1d044804-2d21-4512-b284-0bbe82e71d00",
"issue": [
{
"severity": "error",
"code": "exception",
"diagnostics": "<An unexpected internal error has occurred>"
}
]
}