Handling Messages 

Purpose

The Handling Messages IT process does not involve user actions. The Integration Server processes the incoming messages from the sender application and sends them to the corresponding receiver. Message processing can include integration processes while doing this. These integration processes are mandatory for the Business Process Management scenario.

Use of the Process

This IT process is part of the following IT scenarios:

IT Scenario	IT Scenario Variants
Enabling Application-to-Application Processes	A2A Integration
Enabling Business-to-Business Processes	Business Partner Integration Using Industry Standards
Business Process Management	Combining Embedded and Unbounded Processes
Enabling Platform Interoperability	Ensuring A2A and B2B Integration

Prerequisites

This process depends on the incoming message and the previously created configuration objects. These must be available in the Integration Directory and determine, for example, the receiver or receivers of a message.

Process Flow

The process runs in the usage types AS and PI:

       1.      System sends message (external system)

The external sender system sends a message.

       2.      System sends message (AS)

The SAP sender system sends a message.

       3.      System receives message (PI)

The Integration Server receives the message.

       4.      System determines receivers (PI)

The Integration Server determines the receivers of the message.

       5.      System executes mapping (PI)

The Integration Server executes the mapping agreed between the sender and receiver.

       6.      System sends message (PI).

The Integration Server sends the message.

       7.      System instantiates process (PI).

The Business Process Engine instantiates a process.

This step is only mandatory for the Business Process Management scenario.

       8.      System performs correlation (PI)

The Business Process Engine performs the corresponding correlation.

This step is only mandatory for the Business Process Management scenario.

       9.      System executes process step (PI)

The Business Process Engine executes the process step.

This step is only mandatory for the Business Process Management scenario.

   10.      System sends message (PI).

The Integration Server sends the message.

   11.      System receives message (AS)

The SAP receiver system receives the message.

   12.      System receives message (external system)

The external receiver system receives the message.

Result

The incoming message is processed and sent to the determined receiver or receivers.