# Check

## Function

This API is used to check for IPC upgrade.

## Request Message

### Parameter Description

##### Table 1

Parameter | Range | Type | Description
--- | --- | --- | ---
check_chns |  | string array | The IPC that needs to be detected.

Sample:

    POST /API/IPCMaintaint/FtpIpcUpgrade/Check HTTP/1.1

    {
        "version":"1.0",
        "data":{
            "check_chns":[
                "CH8",
                "CH15",
                "CH16"
            ]
        }
    }

## Response Message

None.

Sample:

    HTTP/1.1 200 OK
    Content-Type: application/json

    {
        "result": "success",
        "data": {
        }
    }

## Error Code

See Response Messages Body and Common error_code for more information.