Message Event Implementation

TIBCO Business Studio supports the following Message Exchange Patterns (MEPs):

MEP	Description	How to Model
Receive one-way request from external application	The process receives a message from an external application and does not send a response.	Start message event (if the process is started upon receipt of the message) Intermediate catch message event Receive task See To Receive a One-Way Request Operation .
Send one-way request to external application	The process sends a message to an external application but expects no response.	End message event Intermediate throw message event Send task See To Send a One-Way Request Operation and Creating References .
Receive request-response message from an external application	The process receives a request response message from the external application, and replies to the request.	Start message event Intermediate catch message event, or Receive task paired with Message end event Intermediate throw message event, or Send Task See To Receive a Request-Response Operation and Using Request Response Operation with Send and Receive Tasks .
Send request-response message to an external application	A client (service consumer) sends a request message to the web service (service supplier). The web service (service supplier) returns a response message to the client (service consumer). The web service may optionally return a fault message in the event of an error.	Service task.

Whether a message event performs a one-way operation or is part of a request-response operation is configured on the Properties view for the events.