A collection of error, warning or information messages that result from a system action.

Can result from the failure of a REST call or be part of the response message returned from a request message. If sent with extensions overriding particular issues, might even appear as part of a request message.

An error, warning or information message that results from a system action.

Indicates whether the issue indicates a variation from successful processing.

Indicates how relevant the issue is to the overall success of the action.

This is labeled as "Is Modifier" because applications should not confuse hints and warnings with errors.

A code indicating the type of error, warning or information message.

Expresses the issue in a computer-friendly way, allowing the requesting system to behave differently based on the type of issue.

Codes should only be defined at a level of granularity that reasonably allows distinct actions to be taken by the receiving system. If the response behavior of all systems is the same for two codes, the codes might as well be merged. The human-meaningful content of the issue is conveyed in .text.

Additional description of the issue.

typically this field is used to provide details human-readable information about the error.

A simple XPath limited to element names, repetition indicators and the default child access that identifies one of the elements in the resource that caused this issue to be raised.

Allows systems to highlight or otherwise guide users to elements implicated in issues to allow them to be fixed more easily.

The root of the XPath is the resource or bundle that generated OperationOutcome. Each XPath SHALL resolve to a single node. The XPath syntax is used whether the referenced instance is expressed in XML or JSON.