> ## Documentation Index
> Fetch the complete documentation index at: https://wiz-myvocal.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Regenerate the arrangement

> Ask the service for a new arrangement for the current brief.

Queues a new `ARRANGEMENT` job for the project's current brief. Use this when you would rather get a fresh arrangement than edit the existing one.

### Header

<ParamField header="accessKey" type="string" required>
  API key for authentication.
</ParamField>

<ParamField header="Idempotency-Key" type="string" required>
  Unique per operation: 16–64 printable ASCII characters. Same key with a different body is rejected with `47008`.
</ParamField>

### Path

<ParamField path="projectId" type="string" required>
  The project identifier.
</ParamField>

### Body

<ParamField body="expectedVersion" type="number" required>
  The `arrangementVersion` you based this request on. A mismatch is rejected with `47016`.
</ParamField>

### Response

<ResponseField name="projectId" type="string">
  Project identifier.
</ResponseField>

<ResponseField name="jobId" type="string">
  The new arrangement job.
</ResponseField>

<ResponseField name="jobType" type="string">
  `ARRANGEMENT`.
</ResponseField>

<ResponseField name="status" type="string">
  `QUEUED`.
</ResponseField>

<RequestExample>
  ```bash theme={null}
  curl --location 'https://api.myvocal.ai/sound_clone/api/v1/music/projects/mup_.../arrangement/regenerate' \
  --header 'accessKey: <your_api_key>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: 91b7c0de4a2f57c3' \
  --data '{ "expectedVersion": 1 }'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 Success theme={null}
  {
    "code": 1,
    "message": "success",
    "data": {
      "projectId": "mup_...",
      "jobId": "muj_...",
      "jobType": "ARRANGEMENT",
      "status": "QUEUED",
      "requestId": "..."
    }
  }
  ```

  ```json 200 Replay with the same key and body theme={null}
  {
    "code": 1,
    "message": "success",
    "data": {
      "jobId": "muj_...",
      "projectId": "mup_...",
      "jobType": "ARRANGEMENT",
      "status": "READY",
      "displayStage": "QUEUED",
      "terminal": true,
      "failure": null,
      "attemptCount": "0",
      "requestId": "..."
    }
  }
  ```
</ResponseExample>

<Warning>
  A replay re-reads the job instead of replaying the first response byte-for-byte: the same key can return the job read model, with a different field set and a later status. Use `jobId` to query the job.
</Warning>

### Common errors

* `code = 47016`: `expectedVersion` does not match. Re-read the project and retry.
* `code = 47008`: the `Idempotency-Key` was reused with a different body.
* `code = 47009`: the project does not exist **or** is not owned by your account.
* `code = 47010`: another operation is already in progress for this project.