# person.updateDisplayName mutation write Use when the requested change exactly matches person.updateDisplayName; read the current state first when a version or identifier may have changed. ## Before calling - Authenticate as the accountable Enhance person. - Use only resource identifiers returned by an earlier capability result or supplied by the person. - Reuse clientToken only when retrying this exact mutation input. ## Input

Show complete JSON Schema

```json { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "displayName": { "type": "string", "minLength": 1, "maxLength": 120 } }, "required": [ "displayName" ], "additionalProperties": false } ```

### Example

Show example input

```json { "displayName": "x" } ```

## Result Returns a typed person.updateDisplayName result from the Enhance API without transport-specific prose. ## Recovery - BAD_REQUEST: correct the named fields and call again. - UNAUTHORIZED: restore Enhance authentication, then retry once. - FORBIDDEN or NOT_FOUND: list accessible resources and choose an allowed identifier. - CONFLICT: read the current resource, merge the intended change, and retry with its version. - INTERNAL: run Enhance diagnostics, report the failure, and stop repeating the call. ## Continue with - Read the affected person resource to confirm the result. Compatibility: `a124060401f6f01824c7bd4395853a44fc71ae62b33ae7bff419021008006644`.