Name	Data Type	Description
CallsInConversation	Integer	Represents the number of calls that must be received before the conversation support in the asynchronous API begins processing.
Client	ClientID	Specifies the account ownership and context of an object.
ConversationID	String	Unique ID of initial async API call. All requests that are processed as a single unit have the same ConversationID.
Parameters	Array of APIProperty objects	Container for key value pairs of parameters for objects.
Priority	String	Defines the priority for a triggered send. Valid values include Low, Medium, and High.
QueuePriority	Priority	Defines the priority for asynchronous sends. Accepted values: High, Medium, and Low. The default value is Medium.
RequestExpirationTime	String	The date and time when the asynchronous API request expires. Specify the value in ISO 8601 format with UTC time or with a timezone offset. When you specify both RequestExpirationTime and ScheduledTime in a request, the RequestExpirationTime must occur after the ScheduledTime.
RequestType	RequestType	The type of request. Possible values are synchronous and asynchronous.
SaveOptions	Array of SaveOption objects	Specifies how information is overwritten.
ScheduledTime	String	The date and time at which the request must be processed. Specify the value in ISO 8601 format with UTC time or a timezone offset. The specified time can be up to 30 days in the future.
SendResponseTo	Array of AsyncResponse objects	Defines how responses are returned and under what conditions. Optional.
SequenceCode	Integer	Specifies the processing sequence of a multi-step conversation. This optional property requires the use of ConversationID.