## On this page

The `$refresh-reference-display` operation updates the `Reference.display` strings within a resource to reflect the current display string for the referenced resource. This is used to update resources when e.g. linked Patient names are changed.

## Invocation

```text
POST [base]/[ResourceType]/[id]/$refresh-reference-display
```

## Input Parameters

The operation does not have any parameters, and can be invoked with an empty POST body.

## Output

The operation returns the updated resource, with all references within populated with the current display string.

## Example

### Request

```http
POST /fhir/R4/Observation/[id]/$refresh-reference-display
```

- [Invocation](/content/docs/api/fhir/operations/refresh-reference-display#invocation/index.html)
- [Input Parameters](/content/docs/api/fhir/operations/refresh-reference-display#input-parameters/index.html)
- [Output](/content/docs/api/fhir/operations/refresh-reference-display#output/index.html)
- [Example](/content/docs/api/fhir/operations/refresh-reference-display#example/index.html)
  - [Request](/content/docs/api/fhir/operations/refresh-reference-display#request/index.html)