Name

Type

Description

MessageId

String

A globally unique identifier for the message. This value is mandatory.

MessageType

String

This value shall be “ua-action-request” Request messages or “ua-action-response” for Response messages.

This value is mandatory.

PublisherId

String

The PublisherId of the Responder for the “ua-action-request” and “ua-action-response” message.

This value is mandatory.

Timestamp

UtcTime

When the message was first sent to the Middleware.

This value is mandatory.

ResponseAddress

String

The address used to send the Response messages. The handling of the ResponseAddress and default values are defined for the different transport protocol mappings.

This value is mandatory for Request messages.

This value shall be omitted for Response message.

CorrelationData

ByteString

Data provided by the Requestor in the Request message that is returned to the Requestor in the Response message.

The value may be provided in the Request message.

The value shall be provided in the Response message if it was included in the Request message.

RequestorId

String

The PublisherId of the Requestor for the “ua-action-request” and “ua-action-response” message.

This value is mandatory.

TimeoutHint

Duration

The timeout used by the Requestor to wait for a Response messages and by the Responder to stop processing the request.

This value is mandatory for the Request message.

This value is not used for Response messages.

Message

*

A JSON array of JSON ActionRequest or JSON ActionResponse messages.

This value is mandatory.