# Upload File - UploadUSMSFile

## Overview

Upload File






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `UploadUSMSFile`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.scloudsg.com/uaccount/api_manage)                                             | **Yes** |
| **Signature**  | string  | User signature generated based on public key and API command, see [Signature Algorithm](/docs/api/summary/signature.md)  | **Yes** |

### Request Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **ProjectId** | string | Project ID. Leave it blank for the default project. Sub-accounts must fill in. Please refer to the [GetProjectList API](/docs/api/summary/get_project_list) |**Yes**|
| **FileName** | string | File Name, including file extension |**Yes**|
| **FileContent** | string | File content, base64 encoded |**Yes**|
| **Source** | int | File Source, 0-Signature Qualification |**Yes**|
| **FileType** | string | File Type, MIME Format |No|

### Response Field

| Field Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **RetCode** | int | Return status code. If it is 0, it means successful return. If it is not 0, it means failure. |**Yes**|
| **Action** | string | Operation command name. |**Yes**|
| **Message** | string | Returns an error message, providing detailed description when `RetCode` is non-zero. |No|
| **FileId** | string | File FileId |**Yes**|




## Example

### Request Example
    
```
https://api.scloudsg.com/?Action=UploadUSMSFile
&ProjectId=kQHqKnwm
&FileName=NDcAjdJL
&FileContent=UIpLlsLc
&Source=sXisGXnS
&FileType=urZEKQjc
```

### Response Example
    
```json
{
  "Action": "UploadUSMSFileResponse",
  "FileId": "eEfMxltA",
  "Message": "AtRVUdVH",
  "RetCode": 0
}
```