The IDocs created are passed to the associated application program. This application program checks the data and updates it in the application database, if necessary.
Whether the second step is started automatically or not depends on the ALE/IDoc settings. One of the main parameters for this is stored in the partner profile (for a partner and a message type). This parameter defines whether the IDoc is to be processed immediately or by means of a background program.
partner profiles created by the LSM Workbench automatically, this parameter is
set to Start by background program. You can change this manually at any
time. See IDoc inbound processing → Maintain partner types.
For more information, see transaction WE20 under Help → Application Help.
When processing inbound IDocs, so-called "work items" are generated in the standard system. These are elements of the SAP workflow that, in general, are not required for data migration. For information on how — and with which consequences — the generation of work items can be suppressed, see SAP Note 149368.
The CD-ROM Interface Adviser, provided by SAP, contains useful information on how to enhance performance in IDoc processing. For this, follow the path → Technique → Interfaces → Background processing → Import → ALE/IDoc → Performance.
1. From the list of steps, choose Start IDoc processing.
2. Fill in the fields as required.
3. Choose Execute.
The IDocs created are passed to the associated application program.