Implementation of Inbound Processing

This section describes the implementation of an ALE-enabled interface for inbound IDocs. The prerequisite is that message types and IDoc types have already been defined.

Components of an ALE Interface for Processing Inbound IDocs

A complete ALE interface for processing inbound IDocs consists of the following components:

1. A function module called by the ALE layer to process the inbound IDoc

2. An SAP Business Workflow task with objects and events for error handling

3. ALE table entries ('settings')

Process flow for IDoc inbound processing

1. The ALE layer reads the Customizing settings for the inbound IDoc to determine which function module to call.

2. The function module is called and given the IDoc(s) to be processed.

3. The function module returns status information about whether the IDoc was successfully processed.

4. If it was successfully processed, it returns the ID of the application document that was created or changed.

5. If an error occurred while processing the IDoc, the ALE layer triggers the SAP Business Workflow event assigned to the IDoc.

• Inbound Function Module

• ALE Settings

• Objects, Events and Tasks To Be Created

• Inbound Processing Using SAP Workflow

• Advanced Workflow Programming