---
title: "Check schema validity"
slug: "ai-application-service-aitems-schema-validation"
updated: 2026-09-17T09:35:47Z
published: 2026-09-17T09:35:47Z
canonical: "api.ncloud-docs.com/ai-application-service-aitems-schema-validation"
---

> ## 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.

# Check schema validity

Available in Classic and VPC

Validate the availability of the schema information entered.

## Request

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

| Method | URI |
| --- | --- |
| POST | /schemas/validation-check |

### Request headers

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

### Request body

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

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `datasetType` | String | Required | Dataset type - `user` \| `item` \| `interaction` - `user`: Data containing user information (age, gender, etc.) - `item`: Data with product-related information (price, release date, category, etc.) - `interaction`: Data that captures the history of interactions between users and products |
| `name` | String | Required | Schema name - Enter 3-20 characters using a combination of English letters, numbers, and special characters "_" and "-". - The string must begin with an English letter. |
| `fields` | Array | Required | Schema field information: [fields](/docs/en/ai-application-service-aitems-schema-validation#fields) |
| `description` | String | Required | Schema description - 0-100 characters |

#### `fields`

The following describes `fields`.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `name` | String | Required | Schema field name - Enter the same field names as in the data file - Check basic schema fields by dataset type with [Get basic schema information](/docs/en/ai-application-service-aitems-schema-default) |
| `type` | Array | Required | Schema field data type - `string` \| `int` \| `long` \| `boolean` \| `null` |
| `categorical` | Boolean | Required | Whether the field is categorical - `true` \| `false` - `true`: Categorical data - `false`: Uncategorical data |

### Request example

The request example is as follows:

```
curl --location --request POST 'https://aitems.apigw.ntruss.com/api/v1/schemas/validation-check' \
--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 '{
    "datasetType": "user",
    "name": "user_schema",
    "fields": [
        {
            "name": "USER_ID",
            "type": [
                "string"
            ],
            "categorical": false
        }
    ],
    "description": "desc"
}'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `name` | String | - | Schema field name |
| `type` | Array | - | Schema field data type - `string` \| `int` \| `long` \| `boolean` \| `null` |
| `categorical` | Boolean | - | Whether the field is categorical - `true` \| `false` - `true`: Categorical data - `false`: Uncategorical data - Not displayed when `false` |

### Response status codes

For information about the HTTP status codes common to all AiTEMS APIs, see [AiTEMS response status codes](/docs/en/aitems-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:

```
[
    {
        "name": "USER_ID",
        "type": [
            "string"
        ]
    }
]
```