---
title: "Get Sub Csr"
slug: "get-sub-csr"
tags: ["Private CA"]
updated: 2026-09-17T10:25:43Z
published: 2026-09-17T10:25:43Z
canonical: "api.ncloud-docs.com/get-sub-csr"
---

> ## 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.

# Get Sub Csr

Available in Classic and VPC

Get the CSR of an intermediate CA that you can sign yourself.

Note

You can't get the CSR for an intermediate CA whose signature is complete.

## Request

The following describes the request format for the endpoint. The request format is as follows:

| Method | URI |
| --- | --- |
| GET | /api/v1/ca/{caTag}/sub/csr |

### Request headers

For information about the headers common to all CA APIs, see [CA request headers](/docs/en/security-privateca#%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 |
| --- | --- | --- | --- |
| `caTag` | String | Required | CA tag value - See [Get CA list](/docs/en/security-privateca-getcalist) |

### Request example

The following is a sample request.

```
curl --location --request GET 'https://pca.apigw.ntruss.com/api/v1/ca/********-********/sub/csr' \
--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'
```

## Response

The following describes the response format.

### Response body

The following describes the response body.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `code` | String | - | Response code |
| `msg` | String | - | Response message |
| `data` | Object | - | Response result |
| `data.csrPem` | String | - | CSR(PEM) |

### Response status codes

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

### Response example

The following is a sample example.

```
{
    "code": "SUCCESS",
    "msg": "Success",
    "data": {
        "csrPem": "-----BEGIN CERTIFICATE REQUEST-----\n{CSR}\n-----END CERTIFICATE REQUEST-----"
    }
}
```