# canvas.duplicateNodes
mutation write
Use when the requested change exactly matches canvas.duplicateNodes; 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":{"canvasRef":{"type":"string","minLength":1},"baseVersion":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991},"waitMs":{"default":1500,"description":"Additional polling after the initial server call; this does not bound initial native preparation time.","type":"integer","minimum":0,"maximum":5000},"nodeIds":{"minItems":1,"type":"array","items":{"type":"string","minLength":1}},"destination":{"oneOf":[{"type":"object","properties":{"kind":{"type":"string","const":"native"}},"required":["kind"],"additionalProperties":false},{"type":"object","properties":{"kind":{"type":"string","const":"inside"},"parentId":{"type":"string","minLength":1}},"required":["kind","parentId"],"additionalProperties":false}]}},"required":["canvasRef","baseVersion","nodeIds","destination"],"additionalProperties":false}
```
### Example
Show example input
```json
{
"canvasRef": "00000000-0000-4000-8000-000000000010",
"baseVersion": 1,
"nodeIds": [
"screen"
],
"destination": {
"kind": "native"
}
}
```
## Result
Returns a typed canvas.duplicateNodes 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: check the supplied resource and selection; do not substitute unrelated content. Ask for corrected access or scope if needed.
- 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 canvas resource to confirm the result.
Compatibility: `25a52aa18dd96eecada10f9415ca3f9a0d78a46412b8a4a9f86ac6e7a5249f8f`.