Help Center/ ROMA Connect/ API Reference/ Device Integration APIs/ Subscription Management/ Querying Information About a Subscription Management Task
Updated on 2025-10-22 GMT+08:00
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Querying Information About a Subscription Management Task

Function

This API is used to query subscription management information of the specified application.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions. For details about the required permissions, see Permissions Policies and Supported Actions.

URI

GET /v2/{project_id}/link/instances/{instance_id}/notifications

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID. For details about how to obtain the project ID, see "Appendix" > "Obtaining a Project ID" in the API Reference.

instance_id

Yes

String

Instance ID.
Table 2 Query Parameters

Parameter

Mandatory

Type

Description

app_id

No

String

Application ID.

product_serial

No

String

Product ID.

Request Parameters

Table 3 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token, which can be obtained by calling the IAM API (value of X-Subject-Token in the response header).

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

total

Integer

Total.

size

Integer

Number of records displayed on each page.

items

Array of NotificationResponseBody objects

List of subscription management tasks.
Table 5 NotificationResponseBody

Parameter

Type

Description

notification_id

Integer

Subscription ID.

type

Integer

Subscription type. The options include 0 (device online), 1 (device offline), 2 (device addition), 3 (device deletion), and 4 (device change).

status

Integer

Subscription management status. The options include 0 (enabled) and 1 (disabled).

topic

String

Name of the subscribed topic.

instance_id

String

Instance ID.

app_id

String

Application ID.

product_serial

String

ID of the product to which a notification belongs.

Status code: 400

Table 6 Response body parameters

Parameter

Type

Description

error_code

String

System error code, which is the detailed error code of HTTP error codes 4xx and 5xx.

error_msg

String

Error description.

request_id

String

Message ID.

Status code: 404

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

System error code, which is the detailed error code of HTTP error codes 4xx and 5xx.

error_msg

String

Error description.

request_id

String

Message ID.

Status code: 500

Table 8 Response body parameters

Parameter

Type

Description

error_code

String

System error code, which is the detailed error code of HTTP error codes 4xx and 5xx.

error_msg

String

Error description.

request_id

String

Message ID.

Example Requests

None

Example Responses

Status code: 200

OK

{
  "total" : 9999999999,
  "size" : 999,
  "items" : [ {
    "notification_id" : 100,
    "type" : 0,
    "status" : 0,
    "topic" : "string",
    "instance_id" : "string",
    "app_id" : "string"
  } ]
}

Status code: 400

Bad Request

{
  "error_code" : "string",
  "error_msg" : "string",
  "request_id" : "string"
}

Status code: 404

Not Found

{
  "error_code" : "ROMA.00110006",
  "error_msg" : "The resource does not exist. Check whether the resource ID 1 is correct.",
  "request_id" : "624c8be1-39b6-47b7-941d-c159aced368a-1619602544650-cnnorth7a-P-romalink-service01"
}

Status code: 500

Internal Server Error

{
  "error_code" : "string",
  "error_msg" : "string",
  "request_id" : "string"
}

Status Codes

Status Code

Description

200

OK

400

Bad Request

404

Not Found

500

Internal Server Error

Error Codes

See Error Codes.

Parent topic: Subscription Management