{
  "resourceType": "OperationOutcome",
  "id": "22daadee-26e1-4d6a-9e6a-7f4af9b58877",
  "issue": [
    {
      "severity": "error",
      "code": "value",
      "details": {
        "coding": [
          {
            "system": "https://fhir.nhs.uk/CodeSystem/England-SpineErrorOrWarningCode",
            "code": "INVALID_VALUE",
            "display": "Invalid value"
          }
        ]
      },
      "diagnostics": "Invalid NHS Number"
    }
  ]
}