#### URL Expired

The URL for this request expired after 30 days.

### Optional metadata when starting an operation.

| Field       | Type   | Description                       |
|:-----------|:-------|:----------------------------------|
| OperationID| string | Unique operation identifier.       |
| InitiatorID| string | Initiator identifier.             |
| Name       | string | required. Master key name.       |

### Operation Responses

#### Success Responses

- `200`      Operation started

#### Error Responses

- `400`      Invalid input, validation error, or malformed request
- `500`      Internal server error. May include an `errorCode` (M-prefixed) and `data` from the MPA error code system. See `cwpapi/errors.go` for codes.

### Shell Commands

Base URL

`https://api.your-wallet.blockdaemon-wallet.com/api/cwp/operations/start/backupMasterKey`

```bash
curl --request POST \
     --url https://api.your-wallet.blockdaemon-wallet.com/api/cwp/operations/start/backupMasterKey \
     --header 'accept: application/json' \
     --header 'content-type: application/json'
```

Click `Try It!` to start a request and see the response here! Or choose an example:

#### Response Formats

- `application/json`
- `200`
- `400`
- `500`