---
title: "Upload attachment"
slug: "sens-sms-attachment-create"
updated: 2026-09-17T09:35:44Z
published: 2026-09-17T09:35:44Z
canonical: "api.ncloud-docs.com/sens-sms-attachment-create"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Upload attachment

Available in Classic and VPC

Upload a file for sending an MMS.

## Request

This section describes the request format. The method and URI are as follows:

| Method | URI |
| --- | --- |
| POST | /sms/v2/services/{serviceId}/files |

### Request headers

For information about the headers common to all Simple & Easy Notification Service APIs, see [Simple & Easy Notification Service request headers](/docs/en/sens-overview#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request path parameters

You can use the following path parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `serviceId` | String | Required | SMS service ID - See [Get project list](/docs/en/sens-project-list). |

### Request body

You can include the following data in the body of your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `fileName` | String | Required | Attachment name - 0-40 characters - File name with .jpg and .jpeg extensions |
| `fileBody` | String | Required | Attachment content (kbyte) - 0-300 - Base64-encoded value of a JPG or JPEG image. - Maximum resolution of 1500 x 1440 allowed. - If a prefix is present, it must be removed. (Example: `data:image/png;base64,`) |

Note

If a file with the same name and file size as the file you are uploading already exists, the file is recognized as the same file and reused. (Retained for 6 days)

### Request example

The request example is as follows:

```
curl --location --request POST 'https://sens.apigw.ntruss.com/sms/v2/services/ncp:sms:kr:50*********1:sens/files' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}' \
--header 'Content-Type: application/json' \
--data '{
    "fileName": "G0ufjqMy3wBpCucJenTaU.jpg",
    "fileBody": "/9j/4QC8RXhpZgAASUkqAAgAAAAGABIBAwABAAA...AAAAAAAAAAAAAAAAAAAAAAAAAAH/9k="
}'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `fileId` | String | - | Attachment ID |
| `createTime` | String | - | Attachment creation date and time - YYYY-MM-DDTHH:mm:ss.sss format |
| `expireTime` | String | - | Attachment expiration date and time - YYYY-MM-DDTHH:mm:ss.sss format |

### Response status codes

For information about the HTTP status codes common to all Simple & Easy Notification Service APIs, see [Simple & Easy Notification Service response status codes](/docs/en/sens-overview#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The response example is as follows:

```
{
    "fileId": "a136************************74f7",
    "createTime": "2025-11-25T10:12:47.520",
    "expireTime": "2025-11-27T10:12:47.520"
}
```