This API is used to verify the API definition, that is, whether the API path or name already exists.

For details, see Calling APIs.

POST /v2/{project_id}/apigw/instances/{instance_id}/apis/check

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain it, see Obtaining a Project ID.
instance_id	Yes	String	Gateway ID, which can be obtained from the gateway information on the APIG console.

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is a token.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
name	No	String	API name. This parameter is mandatory when type is set to name.
req_method	No	String	Request method. This parameter is mandatory when type is set to path. Enumeration values: GET POST PUT DELETE HEAD PATCH OPTIONS ANY
req_uri	No	String	Access address of the API. This parameter is mandatory when type is set to path.
match_mode	No	String	API matching mode: SWA: Prefix match NORMAL: Exact match This parameter is mandatory when type is set to path. Enumeration values: SWA NORMAL
group_id	No	String	Group ID. This parameter is mandatory for checking for duplicate API definitions in the group.
roma_app_id	No	String	Integration application ID. This is not supported currently.
api_id	No	String	ID of the API to be compared.
type	Yes	String	Verification type: path: path type name: name type Enumeration values: path name

Status code: 400

**Table 4** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 401

**Table 5** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 403

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 404

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

Status code: 500

**Table 8** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error description.

{
  "type" : "name",
  "name" : "api_demo"
}

Status code: 400

Bad Request

{
  "error_code" : "APIG.3202",
  "error_msg" : "The API name already exists, api_name:api_demo"
}

Status code: 401

Unauthorized

{
  "error_code" : "APIG.1002",
  "error_msg" : "Incorrect token or token resolution failed"
}

Status code: 403

Forbidden

{
  "error_code" : "APIG.1005",
  "error_msg" : "No permissions to request this method"
}

Status code: 404

Not Found

{
  "error_code" : "APIG.3030",
  "error_msg" : "The instance does not exist;id:f0fa1789-3b76-433b-a787-9892951c620ec"
}

Status code: 500

Internal Server Error

{
  "error_code" : "APIG.9999",
  "error_msg" : "System error"
}

Verifying the API Definition