Help Center/ Enterprise Router/ API Reference/ APIs/ Tags/ Creating Resource Tags

Updated on 2026-03-20 GMT+08:00

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Creating Resource Tags

Function

This API is used to create tags for resources of a specific type.

Constraints

There are some constraints:

A resource can have up to 20 tags.
This API is idempotent.
If a tag to be created has the same key as an existing tag, the tag will be created and overwrite the existing one.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account root user has all the permissions required to call all APIs, but IAM users must be assigned the following required identity policy-based permissions. For details about the required permissions, see Permissions Policies and Supported Actions.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
er:tags:singleCreate	Write	routeTables	g:EnterpriseProjectId g:ResourceTag/<tag-key>	er:tags:create	-
		instances	g:EnterpriseProjectId g:ResourceTag/<tag-key>
		attachments	g:EnterpriseProjectId g:ResourceTag/<tag-key>

URI

POST /v3/{project_id}/{resource_type}/{resource_id}/tags

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID
resource_id	Yes	String	Resource ID.
resource_type	Yes	String	Tagged resource type. instance: enterprise router route-table: route table vpc-attachment: VPC attachment vgw-attachment: virtual gateway attachment peering-attachment: peering connection attachment vpn-attachment: VPN gateway attachment gdgw-attachment: global DC gateway attachment

Request Parameters

**Table 2** Request body parameters
Parameter	Mandatory	Type	Description
tag	Yes	Tag object	Resource tag

**Table 3** Tag
Parameter	Mandatory	Type	Description
key	No	String	Tag key. A tag key can contain letters, digits, spaces encoded using UTF-8, and special characters _.:=+-@ A tag key cannot be left blank. A tag key can contain 1 to 128 characters. Tags with the tag key starting with _sys_ are system tags and cannot be added by tenants. Minimum: 1 Maximum: 128
value	No	String	Tag value. A tag value can contain letters, digits, spaces encoded using UTF-8, and special characters _.:=+-@ A tag value can be left blank or set to null. A tag value can contain 0 to 255 characters. Minimum: 0 Maximum: 255

Response Parameters

Status code: 204

No Content

None

Example Requests

Creating tags for a resource, with the tag key set to key1 and tag value to value1

POST https://{erouter-endpoint}/v3/cfa563efb77d4b6d9960781d82530fd8/instance/3320166e-b937-40cc-a35c-02cd3f2b3ee2/tags

{
  "tag" : {
    "key" : "key1",
    "value" : "value1"
  }
}