---
title: "September 17, 2026"
slug: "api-releasenote-20260917"
updated: 2026-10-08T04:17:12Z
published: 2026-10-08T04:17:12Z
canonical: "api.ncloud-docs.com/api-releasenote-20260917"
---

> ## 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.

# September 17, 2026

You can view the changes to the service that were updated during the regular release on September 17, 2026.

              Caution

              

Information regarding "Update - Termination" or "Update - Feature change" requires action on your part, so review the details of these changes.

## VPC

You can view the service-specific changes applied to the VPC environment during the scheduled release on September 17, 2026. Click a service name to view the release notes for that service.

### Blockchain Service

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Termination | End of API provision. - All operations will be unavailable starting September 17, 2026. |  |

### [Certificate Manager](/docs/en/security-certificatemanager-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature change | Length restriction for `certificateName` in `createExternalCertificate` changed from 3-30 characters to 3-20 characters (letters, numbers, and hyphens). | [createExternalCertificate](/docs/en/security-certificatemanager-createexternalcertificate) |
| Update - Others | Request method and URI correction. - `DownloadCertificate` request method GET → POST and request body (`certificateNo`·`type`·`passwd`) added. - `ListCloudCertificates` request URI `/certificates` → `/getCertificates`. | - [DownloadCertificate](/docs/en/security-certificatemanager-downloadcertificate) - [ListCloudCertificates](/docs/en/security-certificatemanager-listcloudcertificates) |
| Update - Others | Request example (curl) URI correction. - `AdvancedCertificateRequest`: `requestPaidCertificateIssuance` - `GlobalEdgeCertificateRequest`: `requestGedCertificateIssuance` - `RegisterPrivateKey`: `registPrivateKey` - `SetRenewalStatus`: `setCertificateRenewal` - `ListAdvancedCertificates`: `getPaidCertificates` - `ListRecentCertChanges`: `recentChanges` | - [AdvancedCertificateRequest](/docs/en/security-certificatemanager-advancedcertificaterequest) - [GlobalEdgeCertificateRequest](/docs/en/security-certificatemanager-globaledgecertificaterequest) - [RegisterPrivateKey](/docs/en/security-certificatemanager-registerprivatekey) - [SetRenewalStatus](/docs/en/security-certificatemanager-setrenewalstatus) - [ListAdvancedCertificates](/docs/en/security-certificatemanager-listadvancedcertificates) - [ListRecentCertChanges](/docs/en/security-certificatemanager-listrecentcertchanges) |
| Update - Others | Corrections to response field names and types - Response field names in `ListAdvancedCertificates` were corrected from `certificateTypeCode` to `certificateType` and from `orderID` to `orderId`; certificate type values were also updated (`NCP_PAID_DV_01`). - `subjectCommonName` of `GetCertificateChain` was changed from integer to string. - `validSn` of `ListDcvStatuses` was changed from string to integer. - `certificateNo` of `ReissueCertificate` was changed from query parameter to path parameter (integer). - Type notation of `SetRenewalStatus` was changed from Int to Integer. | - [ListAdvancedCertificates](/docs/en/security-certificatemanager-listadvancedcertificates) - [GetCertificateChain](/docs/en/security-certificatemanager-getcertificatechain) - [ListDcvStatuses](/docs/en/security-certificatemanager-listdcvstatuses) - [ReissueCertificate](/docs/en/security-certificatemanager-reissuecertificate) - [SetRenewalStatus](/docs/en/security-certificatemanager-setrenewalstatus) |
| Update - Others | Supplemented request parameters and response field tables. - Added response fields (`certPublicKeyInfo`·`issuer`·`serialNumber`·`signatureAlgorithm`·`issueDate`·`notBefore`·`notAfter`·`revokeDate`·`usedInstanceNoList`·`orderId`) and request parameter tables (`page`·`pageSize`·`certificateName`) to `ListCertificates`, `ListCloudCertificates`, and `ListAdvancedCertificates`. - Added `keyAlgorithm`, `requestToken`, and `subscriptionPeriod` to `AdvancedCertificateRequest`. - Added `type` to `DownloadCertificate`. - Added `emailVerificationCount`, `emailVerificationList`, and `txtId` to `ListDcvStatuses`. - Added `startDateTime` and `endDateTime` to `ListRecentCertChanges`, and specified that either `minutes` or `seconds` is required. - Clarified that paging is not supported for `ListEabCredentials`. - Removed duplicate rows for `revokeType` in `RevokeCertificate`. | - [ListCertificates](/docs/en/security-certificatemanager-listcertificates) - [ListCloudCertificates](/docs/en/security-certificatemanager-listcloudcertificates) - [ListAdvancedCertificates](/docs/en/security-certificatemanager-listadvancedcertificates) - [AdvancedCertificateRequest](/docs/en/security-certificatemanager-advancedcertificaterequest) - [DownloadCertificate](/docs/en/security-certificatemanager-downloadcertificate) - [ListDcvStatuses](/docs/en/security-certificatemanager-listdcvstatuses) - [ListRecentCertChanges](/docs/en/security-certificatemanager-listrecentcertchanges) - [ListEabCredentials](/docs/en/security-certificatemanager-listeabcredentials) - [RevokeCertificate](/docs/en/security-certificatemanager-revokecertificate) |
| Update - Others | Added common error codes `1000`, `1006`, and `2101`. | [Certificate Manager overview](/docs/en/security-certificatemanager) |

### [Cloud Data Streaming Service](/docs/en/analytics-clouddatastreamingservice-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature addition | - Added "Deprecated" information fields for the management tool to the Get cluster API response. - Added "Deprecated" information for `cmakPort` and `cmakVersion` to the Get cluster list. - Added "Deprecated" information for `result.cmakStatus` to the Get cluster status, Get node rolling restart status, and Get version upgrade status. | - [Get cluster list](/docs/en/analytics-clouddatastreamingservice-cluster-getclusterinfolist) - [Get cluster status](/docs/en/analytics-clouddatastreamingservice-cluster-getclusterstatus) - [Get node rolling restart status](/docs/en/cdss-rollingrestartprogresscheck) - [Get version upgrade status](/docs/en/cdss-rollingupgradeprogresscheck) |
| Update - Termination | - End of provision for Restart cluster CMAK API. - Deleted applicable operations following the removal of CMAK. | - |

### [Cloud DB for PostgreSQL (VPC)](/docs/en/database-vpostgresql-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature addition | Added support for specifying a folder path using the `folderPath` field for Object Storage export. | - [exportBackupToObjectStorage](/docs/en/database-vpostgresql-exportbackuptoobjectstorage) - [exportDbServerLogToObjectStorage](/docs/en/database-vpostgresql-exportdbserverlogtoobjectstorage) |

### Cloud DB Serverless ![ico-badge-standardized](https://cdn.document360.io/da0368a0-4444-4862-a528-42f78876f9e6/Images/Documentation/ico-badge-standardized.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A14%3A13Z&se=2026-11-14T05%3A14%3A13Z&sr=c&sp=r&sig=vcO8ziKAxecuxGygmGErCpXogT%2F4ZDUGcJpIyf8sJvg%3D)

| Classification | Changes | Go to page |
| --- | --- | --- |
| New - Initial release | Provision of the Cloud DB Serverless API that incorporates Ncloud's standard notation. | [Cloud DB Serverless overview](/docs/en/pub-clouddb-serverless-v1-overview) |

### [Global DNS](/docs/en/networking-globaldns-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Bug improvement | Fixed an error that occurred when attempting to change the TTL of multiple TXT records with the same value simultaneously. | - |

### Ncloud Chat

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Termination | End of API provision. - All operations will be unavailable starting September 17, 2026. |  |

### [Ncloud Kubernetes Service](/docs/en/nks-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature addition | Added validation for the Create cluster API. - Added validation for zone and subnet mismatches in regional cluster node pools. - Added validation for Audit Log CLA subscription. - Istio add-on now available. - Requests to create regional clusters must verify that the zone and subnet of the node pool match and that the Audit Log CLA is subscribed to. If there is a mismatch, the request will fail. | - |

### [Search Engine Service](/docs/en/analytics-vpcsearchengine-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Bug improvement | Correction of a typo in the sub account permission name: `changSpecOfNode`. | - |

### [Simple & Easy Notification Service](/docs/en/sens-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature addition | Introduction of 5 new email delivery APIs. Following the integration of Outbound Mailer, SENS now supports email delivery and retrieval. - Email delivery request creation - `POST /mail/v2/services/{serviceId}/requests` - Request body required - `address` - `groups` - Request body optional - `senderName` - `individual` - `confirmAndSend` - `advertising` - `parameters` - `reservationDateTime` - `attachFileIds` - `useBasicUnsubscribeMessage` - `unsubscribeMessage` - `name` - `type` - `operator` - Get delivery request list - `GET /mail/v2/services/{serviceId}/requests` - Query parameter required - `fromDateTime` - `toDateTime` - Query parameter optional - `requestId` - `mailId` - `title` - `templateNo` - `senderAddress` - `recipientAddress` - `dispatchType` - `status` - `pageNo` - `pageSize` - `sort` - Get delivery request - `GET /mail/v2/services/{serviceId}/requests/{requestId}` - Get email list - `GET /mail/v2/services/{serviceId}/requests/{requestId}/mails` - Query parameter optional - `mailId` - `recipientAddress` - `title` - `status` - `pageNo` - `pageSize` - `sort` - Get email details - `GET /mail/v2/services/{serviceId}/requests/{requestId}/mails/{mailId}` | - [Create email delivery request](/docs/en/sens-mail-request-create) - [Get delivery request list](/docs/en/sens-mail-request-list) - [Get delivery request](/docs/en/sens-mail-request-get) - [Get email list](/docs/en/sens-mail-list) - [Get email details](/docs/en/sens-mail-get) |

### [Video Player Enhancement](/docs/en/vpe-api-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Others | Response to NAVER Cloud API workflow termination: Migration to a dedicated Cron VM. | - |

## Classic

You can view the service-specific changes applied to the Classic environment during the scheduled release on September 17, 2026. Click a service name to view the release notes for that service.

### [Certificate Manager](/docs/en/security-certificatemanager-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature change | Length restriction for `certificateName` in `createExternalCertificate` changed from 3-30 characters to 3-20 characters (letters, numbers, and hyphens). | [createExternalCertificate](/docs/en/security-certificatemanager-createexternalcertificate) |
| Update - Others | Request method and URI correction. - `DownloadCertificate` request method GET → POST and request body (`certificateNo`·`type`·`passwd`) added. - `ListCloudCertificates` request URI `/certificates` → `/getCertificates`. | - [DownloadCertificate](/docs/en/security-certificatemanager-downloadcertificate) - [ListCloudCertificates](/docs/en/security-certificatemanager-listcloudcertificates) |
| Update - Others | Request example (curl) URI correction. - `AdvancedCertificateRequest`: `requestPaidCertificateIssuance` - `GlobalEdgeCertificateRequest`: `requestGedCertificateIssuance` - `RegisterPrivateKey`: `registPrivateKey` - `SetRenewalStatus`: `setCertificateRenewal` - `ListAdvancedCertificates`: `getPaidCertificates` - `ListRecentCertChanges`: `recentChanges` | - [AdvancedCertificateRequest](/docs/en/security-certificatemanager-advancedcertificaterequest) - [GlobalEdgeCertificateRequest](/docs/en/security-certificatemanager-globaledgecertificaterequest) - [RegisterPrivateKey](/docs/en/security-certificatemanager-registerprivatekey) - [SetRenewalStatus](/docs/en/security-certificatemanager-setrenewalstatus) - [ListAdvancedCertificates](/docs/en/security-certificatemanager-listadvancedcertificates) - [ListRecentCertChanges](/docs/en/security-certificatemanager-listrecentcertchanges) |
| Update - Others | Corrections to response field names and types - Response field names in `ListAdvancedCertificates` were corrected from `certificateTypeCode` to `certificateType` and from `orderID` to `orderId`; certificate type values were also updated (`NCP_PAID_DV_01`). - `subjectCommonName` of `GetCertificateChain` was changed from integer to string. - `validSn` of `ListDcvStatuses` was changed from string to integer. - `certificateNo` of `ReissueCertificate` was changed from query parameter to path parameter (integer). - Type notation of `SetRenewalStatus` was changed from Int to Integer. | - [ListAdvancedCertificates](/docs/en/security-certificatemanager-listadvancedcertificates) - [GetCertificateChain](/docs/en/security-certificatemanager-getcertificatechain) - [ListDcvStatuses](/docs/en/security-certificatemanager-listdcvstatuses) - [ReissueCertificate](/docs/en/security-certificatemanager-reissuecertificate) - [SetRenewalStatus](/docs/en/security-certificatemanager-setrenewalstatus) |
| Update - Others | Supplemented request parameters and response field tables. - Added response fields (`certPublicKeyInfo`·`issuer`·`serialNumber`·`signatureAlgorithm`·`issueDate`·`notBefore`·`notAfter`·`revokeDate`·`usedInstanceNoList`·`orderId`) and request parameter tables (`page`·`pageSize`·`certificateName`) to `ListCertificates`, `ListCloudCertificates`, and `ListAdvancedCertificates`. - Added `keyAlgorithm`, `requestToken`, and `subscriptionPeriod` to `AdvancedCertificateRequest`. - Added `type` to `DownloadCertificate`. - Added `emailVerificationCount`, `emailVerificationList`, and `txtId` to `ListDcvStatuses`. - Added `startDateTime` and `endDateTime` to `ListRecentCertChanges`, and specified that either `minutes` or `seconds` is required. - Clarified that paging is not supported for `ListEabCredentials`. - Removed duplicate rows for `revokeType` in `RevokeCertificate`. | - [ListCertificates](/docs/en/security-certificatemanager-listcertificates) - [ListCloudCertificates](/docs/en/security-certificatemanager-listcloudcertificates) - [ListAdvancedCertificates](/docs/en/security-certificatemanager-listadvancedcertificates) - [AdvancedCertificateRequest](/docs/en/security-certificatemanager-advancedcertificaterequest) - [DownloadCertificate](/docs/en/security-certificatemanager-downloadcertificate) - [ListDcvStatuses](/docs/en/security-certificatemanager-listdcvstatuses) - [ListRecentCertChanges](/docs/en/security-certificatemanager-listrecentcertchanges) - [ListEabCredentials](/docs/en/security-certificatemanager-listeabcredentials) - [RevokeCertificate](/docs/en/security-certificatemanager-revokecertificate) |
| Update - Others | Added common error codes `1000`, `1006`, and `2101`. | [Certificate Manager overview](/docs/en/security-certificatemanager) |

### [Global DNS](/docs/en/networking-globaldns-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Bug improvement | Fixed an error that occurred when attempting to change the TTL of multiple TXT records with the same value simultaneously. | - |

### [Search Engine Service](/docs/en/analytics-vpcsearchengine-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Bug improvement | Correction of a typo in the sub account permission name: `changSpecOfNode`. | - |

### [Simple & Easy Notification Service](/docs/en/sens-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Feature addition | Introduction of 5 new email delivery APIs. Following the integration of Outbound Mailer, SENS now supports email delivery and retrieval. - Email delivery request creation - `POST /mail/v2/services/{serviceId}/requests` - Request body required - `address` - `groups` - Request body optional - `senderName` - `individual` - `confirmAndSend` - `advertising` - `parameters` - `reservationDateTime` - `attachFileIds` - `useBasicUnsubscribeMessage` - `unsubscribeMessage` - `name` - `type` - `operator` - Get delivery request list - `GET /mail/v2/services/{serviceId}/requests` - Query parameter required - `fromDateTime` - `toDateTime` - Query parameter optional - `requestId` - `mailId` - `title` - `templateNo` - `senderAddress` - `recipientAddress` - `dispatchType` - `status` - `pageNo` - `pageSize` - `sort` - Get delivery request - `GET /mail/v2/services/{serviceId}/requests/{requestId}` - Get email list - `GET /mail/v2/services/{serviceId}/requests/{requestId}/mails` - Query parameter optional - `mailId` - `recipientAddress` - `title` - `status` - `pageNo` - `pageSize` - `sort` - Get email details - `GET /mail/v2/services/{serviceId}/requests/{requestId}/mails/{mailId}` | - [Create email delivery request](/docs/en/sens-mail-request-create) - [Get delivery request list](/docs/en/sens-mail-request-list) - [Get delivery request](/docs/en/sens-mail-request-get) - [Get email list](/docs/en/sens-mail-list) - [Get email details](/docs/en/sens-mail-get) |

### [Video Player Enhancement](/docs/en/vpe-api-releasenote)

| Classification | Changes | Go to page |
| --- | --- | --- |
| Update - Others | Response to NAVER Cloud API workflow termination: Migration to a dedicated Cron VM. | - |