Twins - DigitalTwins AddRelationship

Service:

Azure Digital Twins

API Version:

2023-10-31

Adds a relationship between two digital twins. Status codes:

• 200 OK
• 400 Bad Request
  • InvalidArgument - The digital twin id, relationship id, or payload is invalid.
  • InvalidRelationship - The relationship is invalid.
  • OperationNotAllowed - The relationship cannot connect to the same digital twin.
  • ValidationFailed - The relationship content is invalid.
• 404 Not Found
  • DigitalTwinNotFound - The digital twin was not found.
  • TargetTwinNotFound - The digital twin target of the relationship was not found.
• 412 Precondition Failed
  • PreconditionFailed - The precondition check (If-Match or If-None-Match) failed.

PUT https://digitaltwins-hostname/digitaltwins/{id}/relationships/{relationshipId}?api-version=2023-10-31

URI Parameters

Name	In	Required	Type	Description
id	path	True	string	The id of the digital twin. The id is unique within the service and case sensitive.
relationshipId	path	True	string	The id of the relationship. The id is unique within the digital twin and case sensitive.
api-version	query	True	string	The requested API version.

Request Header

Name	Required	Type	Description
If-None-Match		string	Only perform the operation if the entity does not already exist.
traceparent		string	Identifies the request in a distributed tracing system.
tracestate		string	Provides vendor-specific trace identification information and is a companion to traceparent.

Request Body

Name	Type	Description
relationship	object	The data for the relationship.

Responses

Name	Type	Description
200 OK	Relationship	Success Headers ETag: string
Other Status Codes	ErrorResponse	Default response. Headers x-ms-error-code: string

Security

oauth2

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize?resource=0b07f429-9f4b-4714-9392-cc5e8e80c8b0

Examples

Create a relationship

Create a relationship (with properties)

Create a relationship

Sample Request

HTTP

PUT https://digitaltwins-hostname/digitaltwins/mySourceTwin/relationships/myRelationshipId?api-version=2023-10-31

{
  "$targetId": "myTargetTwin",
  "$relationshipName": "myRelationship"
}

Sample Response

Status code:

200

{
  "$relationshipId": "myRelationshipId",
  "$sourceId": "mySourceTwin",
  "$targetId": "myTargetTwin",
  "$relationshipName": "myRelationship",
  "$etag": "W/\"1553dbf5-0052-4be8-bea8-46269075b503\""
}

Create a relationship (with properties)

Sample Request

HTTP

PUT https://digitaltwins-hostname/digitaltwins/mySourceTwin/relationships/myRelationshipId?api-version=2023-10-31

{
  "$targetId": "myTargetTwin",
  "$relationshipName": "myRelationship",
  "relationshipProperty1": 1,
  "relationshipProperty2": "some value"
}

Sample Response

Status code:

200

{
  "$relationshipId": "myRelationshipId",
  "$sourceId": "mySourceTwin",
  "$targetId": "myTargetTwin",
  "$relationshipName": "myRelationship",
  "relationshipProperty1": 1,
  "relationshipProperty2": "some value",
  "$etag": "W/\"1553dbf5-0052-4be8-bea8-46269075b503\""
}

Definitions

Name	Description
Error	Error definition.
ErrorResponse	Error response.
InnerError	A more specific error description than was provided by the containing error.

Error

Error definition.

Name	Type	Description
code	string	Service specific error code which serves as the substatus for the HTTP error code.
details	Error[]	Internal error details.
innererror	InnerError	An object containing more specific information than the current object about the error.
message	string	A human-readable representation of the error.

ErrorResponse

Error response.

Name	Type	Description
error	Error	The error details.

InnerError

A more specific error description than was provided by the containing error.

Name	Type	Description
code	string	A more specific error code than was provided by the containing error.
innererror	InnerError	An object containing more specific information than the current object about the error.