Queries the information about the parent and child nodes of a node.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes ListNodeIO

The operation that you want to perform.

RegionId String Yes cn-shanghai

Region information, which is usually the region where the service is located. For example, China (Shanghai) is cn-shanghai, and China (Zhangjiakou) is cn-zhangjiakou. You do not need to specify the RegionId because it is automatically resolved based on the endpoint that is called.

ProjectEnv String Yes PROD

The production environment, which is DEV or PROD.

NodeId Long Yes 1234

The ID of the node. You can see ListNodes View the NodeId information.

IoType String Yes output

Specifies whether the node is an upstream or downstream node. Which includes input and output.

Response parameters

Parameter Type Example Description
Data Array of Data

The information about upstream and downstream nodes.

Data String dataworks_a.1234_out

Input or output name.

NodeId Long 123123

The ID of the node.

TableName String dataworks_a.datastudio_tenant_waitres_alarm

Optional. The name of the input table or output table.

ErrorCode String Invalid.Tenant.ProjectNotExists

The error code.

ErrorMessage String The project does not exist.

The error message.

HttpStatusCode Integer 200

The HTTP status code.

RequestId String E6F0DBDD-5AD****

The ID of the request, which is used to locate logs and troubleshoot problems.

Success Boolean true

Indicates whether the request was successful.


Sample requests


Sample success responses

XML format

<ErrorMessage>The project does not exist.</ErrorMessage>


    "RequestId": "E6F0DBDD-5AD****",
    "HttpStatusCode": 200,
    "Data": {
        "NodeId": 123123,
        "TableName": "dataworks_a.datastudio_tenant_waitres_alarm",
        "Data": "dataworks_a.1234_out"
    "ErrorCode": "Invalid.Tenant.ProjectNotExists",
    "ErrorMessage": "The project does not exist.",
    "Success": true

Error codes

Go to the Error CenterFor more information, see error codes.