Overview

The iWay Application Adapter for SAP ERP enables the processing of SAP ERP BAPIs, RFCs, and IDocs.

External applications that access SAP ERP through the adapter use either XML schemas or web services to pass data between the external application and the adapter. You can use iWay Explorer to create the required XML schemas and web services.

SAP ERP must be installed, configured, and available for client access. iWay Explorer need not reside on the same system as the application system being accessed, but network access is required.

Task:

In this section, you will explore SAP through the iWay Explorer. You will connect to SAP ERP, locate the function, BAPI or IDoc you want to integrate with and create the schemas or iWay business service (web service). You can familiarize yourself with the SAP ERP organizational methods. BAPIs, and Remote Function Modules are organized by functional area, and then by alphabetical order. IDocs are listed in alphabetical order by message type, and the same IDoc type can be found several times in the tree. The unique combination of message type and IDoc type determine the processing of the IDoc.

If you find a component with a name that contains a forward slash character (/), then it is an SAP ERP defined namespace (such as /IWAY/) and the components in that namespace are unique to that namespace. The adapter will escape the forward slash character (/) to an underscore character (_) for compatibility with XML formatting.

The document interface style of BAPIs is attribute, with the parameters defined as attributes of the business element, while RFC and IDoc are element, with the parameters or segment and field names defined as unique elements. Each BAPI has a Remote Function Module duplicate, the style is determined by the usage.

For Remote Function Modules, you can create request, response, event, and eventreply XML schemas. For BAPIs, you can create request and response XML schemas. For IDocs, you can create request, response, and event XML schemas.


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