| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  OperationOutcome | N | DomainResource | Information about the success/failure of an action Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension | |
  issue | Σ | 1..* | BackboneElement | A single issue associated with the action |
   severity | Σ | 1..1 | code | fatal | error | warning | information | success Binding: Issue Severity (Required) |
| code | Σ | 1..1 | code | Error or warning code Binding: Issue Type (Required) |
 details | Σ | 0..1 | CodeableConcept | Additional details about the error Binding: Operation Outcome Codes (Example) |
| diagnostics | Σ | 0..1 | string | Additional diagnostic information about the issue |
| location | ΣXD | 0..* | string | Deprecated: Path of element(s) related to issue |
| expression | Σ | 0..* | string | FHIRPath of element(s) related to issue |
| Documentation for this format | ||||