> ## Documentation Index
> Fetch the complete documentation index at: https://docs.metriport.com/llms.txt
> Use this file to discover all available pages before exploring further.

# OperationOutcome

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

## Properties

| Name                | Required | Type                                                            | Description                                            |
| ------------------- | -------- | --------------------------------------------------------------- | ------------------------------------------------------ |
| issue               | Yes      | OperationOutcomeIssue                                           | A single issue associated with the action              |
| - id                | No       | string                                                          | Unique id for inter-element referencing                |
| - extension         | No       | [Extension](/medical-api/fhir/data-types/extension)\[]          | Additional content defined by implementations          |
| - modifierExtension | No       | [Extension](/medical-api/fhir/data-types/extension)\[]          | Extensions that cannot be ignored even if unrecognized |
| - severity          | Yes      | code                                                            | fatal / error / warning / information                  |
| - code              | Yes      | code                                                            | Error or warning code                                  |
| - details           | No       | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Additional details about the error                     |
| - diagnostics       | No       | string                                                          | Additional diagnostic information about the issue      |
| - location          | No       | string\[]                                                       | Deprecated: Path of element(s) related to issue        |
| - expression        | No       | string\[]                                                       | FHIRPath of element(s) related to issue                |

## Search Parameters

None

## Inherited Properties

| Name              | Required | Type                                                   | Description                                            |
| ----------------- | -------- | ------------------------------------------------------ | ------------------------------------------------------ |
| id                | No       | string                                                 | Logical id of this artifact                            |
| meta              | No       | [Meta](/medical-api/fhir/data-types/meta)              | Metadata about the resource                            |
| implicitRules     | No       | uri                                                    | A set of rules under which this content was created    |
| language          | No       | code                                                   | Language of the resource content                       |
| text              | No       | [Narrative](/medical-api/fhir/data-types/narrative)    | Text summary of the resource, for human interpretation |
| contained         | No       | Resource\[]                                            | Contained, inline Resources                            |
| extension         | No       | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations          |
| modifierExtension | No       | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored                      |

To view the FHIR specification for this resource, see [OperationOutcome](https://www.hl7.org/fhir/StructureDefinition/OperationOutcome).