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Edge Security Acceleration:CreateCustomHostname

Last Updated:Mar 19, 2026

Creates a Software as a Service (SaaS) domain name for a site.

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Test

RAM authorization

No authorization for this operation. If you encounter issues with this operation, contact technical support.

Request parameters

Parameter

Type

Required

Description

Example

Hostname

string

Yes

The Software as a Service (SaaS) domain name.

custom.site.com

SiteId

integer

Yes

The ID of the site. To obtain the site ID, call the ListSites operation.

1234567890123

RecordId

integer

Yes

The ID of the record to attach. To obtain the record ID, call the ListRecords operation.

1234567890123

SslFlag

string

Yes

The SSL switch.

  • on: Enables SSL.

  • off: Disables SSL.

on

CertType

string

No

The certificate type. This parameter is required when SslFlag is set to on.

  • free: free certificate.

  • upload: uploaded certificate.

  • cas: Alibaba Cloud Security certificate.

free

Certificate

string

No

The content of the certificate. This parameter is required when CertType is set to upload.

-----BEGIN CERTIFICATE-----

PrivateKey

string

No

The private key of the certificate. This parameter is required when CertType is set to upload.

-----BEGIN PRIVATE KEY-----

CasId

integer

No

The ID of the Alibaba Cloud Security certificate. This parameter is required when CertType is set to cas.

30000478

CasRegion

string

No

The region of the Alibaba Cloud Security certificate. This parameter is required when CertType is set to cas.

  • For accounts on the Alibaba Cloud China Website (www.aliyun.com), set this parameter to cn-hangzhou.

  • For accounts on the Alibaba Cloud International Website (www.alibabacloud.com), set this parameter to ap-southeast-1.

cn-hangzhou

Response elements

Element

Type

Description

Example

object

RequestId

string

The unique request ID, generated by Alibaba Cloud.

0AEDAF20-4DDF-4165-8750-47FF9C1929C9

HostnameId

integer

The ID of the SaaS domain name.

1234567890123

Hostname

string

The SaaS domain name.

custom.site.com

Examples

Success response

JSON format

{
  "RequestId": "0AEDAF20-4DDF-4165-8750-47FF9C1929C9",
  "HostnameId": 1234567890123,
  "Hostname": "custom.site.com"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParameter The specified parameter is invalid. The specified parameter is invalid.
400 InternalException Failed to call the service. Try again later or contact technical support. Failed to call the service. Try again later or contact technical support.
400 Instance.NotOnline Your plan is unavailable due to an overdue payment. Complete the payment first. Your plan is unavailable due to an overdue payment. Complete the payment first.
400 Site.ServiceBusy This website is being configured. Try again later. This website is being configured. Try again later.
400 CustomHostname.ConflictWithExistingResource The custom hostname conflicts with existing resources, such as sites, records, load balancers, source address pools, custom hostnames and Layer 4 proxy records. The custom hostname conflicts with existing resources, such as sites, records, load balancers, source address pools, custom hostnames and Layer 4 proxy records.
400 CustomHostname.ApplyCertFailed Fail to apply a free cert for custom hostname. Please try again later. Fail to apply a free cert for custom hostname. Please try again later.
400 CustomHostname.SetCertFailed Fail to deploy a cert for custom hostname. Please try again later. Fail to deploy a cert for custom hostname. Please try again later.
400 CustomHostname.CheckQuotaFailed Fail to check quota for custom hostname. Please try again later.
400 CustomHostname.OfflineForMultiReason Unable to activate the custom hostname because it is offline due to multiple reasons.
400 CustomHostname.WildcardDomainRequireEnterprisePlan Wildcard custom hostnames require an Enterprise plan.
400 CustomHostname.QueryCasCertFailed Fail to query CAS certificate details. Please try again later.
400 QuotaExceed.CustomHostname The number of custom hostnames exceeds the plan quota. Contact the sales team to increase your quota. The number of custom hostnames exceeds the plan quota. Contact the sales team to increase your quota.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.