FHIR Errors and Exceptions

All resources communicate a success or error condition with the standard HTTP status code of an API request. Below is an overview of all the supported FHIR error codes, along with suggestions that fix potential issues.

As a general rule:

• Codes in the 2xx range indicate success.
• Codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter was omitted, a request wasn't found, etc.).
• Codes in the 5xx range indicate an error with Kodjin FHIR Server API server.

All 4xx errors that could be handled programmatically (e.g., resource not found) include a FHIR OperationOutcome that explains the error reported.

Additional error information

A response with a code in the 4xx or 5xx may contain additional information in the form of an FHIR OperationOutcome. Examples of FHIR OperationOutcome:

{
    "resourceType": "OperationOutcome",
    "issue": [
        {
            "severity": "error",
            "code": "value",
            "expression": [
                "http.Accept"
            ],
            "details": {
                "text": "Server does not support given format. Acceptable formats are: application/fhir+json, text/json, application/json"
            }
        }
    ]
}

{
    "resourceType": "OperationOutcome",
    "issue": [
        {
            "severity": "error",
            "code": "invalid",
            "expression": [
                "Observation.id"
            ],
            "details": {
                "text": "Observation with such id already exists"
            }
        }
    ]
}