Standard SAP IDoc interface uses ALE as the transfer mechanism and workflow functionality is used to route a failed IDOC to a specific individual or workgroup.
Application Link Enabling (ALE) is a component-based architecture enabling software component from SAP and from other software vendors to communicate and be integrated with each other. ALE can integrate business processes between R/3 Systems and non-R/3 systems as well as between R/3 Systems.
Business data is exchanged with an external system using the IDoc Interface. The IDoc Interface consists of the definition of a data structure and a processing logic for this. The data structure is the IDoc. It is the exchange format that unites the communicating systems. Using IDocs you can define an exception handling within the SAP System using SAP Business Workflow, without the need for the data to already be an SAP application document.
To implement the distribution of business application processes and functions using ALE you need to construct a logical Distribution Model of the whole system. Within the framework of this configuration, customers can specify which applications are to run on which systems and which messages are to be exchanged between the applications.
Follow the below 3 Steps for the configuration :
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