In outbound processing one of the function modules of the application creates an IDoc, the so-called master IDoc. This IDoc is sent to the ALE layer where the following processing steps are carried out:
The resulting IDocs (several IDocs could be created in the receiver determination) are referred to as communication IDocs and are stored in the database. The dispatch control then decides which of these IDocs should be sent immediately. These are passed to the communications layer and are sent either using the transactional Remote Function Call (RFC) or via file interfaces (e.g. for EDI).
If an error occurs in the ALE layer, the IDoc containing the error is stored and a workflow is created. The ALE administrator can use this workflow to process the error.
Outbound Processing Step by Step
Mass Processing of IDocs