### eRef /OperationOutcome Resource Profile

**completeness: 20% - Preliminart Draft**


FHIR Release 3 (STU) Documentation: [/OperationOutcome](https://www.hl7.org/fhir/operationoutcome.html)

Operation outcomes are sets of error, warning and information messages that provide detailed information about the outcome of an attempted system operation. They are provided as a direct system response or component of one and provide information about the outcome of the operation. 

The OperationOutcome resource is used in the following circumstances:

•When an RESTful operation fails
•As the response on a validation operation to provide information about the outcome
•As part of a message response, usually when the message has not been processed correctly