This documentation is a step-by-step introduction to developing screen-based Internet applications that are driven by the Internet Transaction Server (ITS) and enable users to run R/3 dialog transactions from any Web browser. These applications – known as Internet Application Components (IACs) or Web transactions – are developed using the Web Transactions implementation model.

You develop Web transactions both inside and outside the R/3 System:

• Inside R/3, you implement the business logic and dialog flow by creating an ABAP dialog program in the ABAP Workbench
• Outside R/3, you implement the presentation ("look and feel") and enable the transaction for Internet use in the SAP@Web Studio

At runtime, the ITS interfaces between the Web server and the R/3 System to control dialog processing. On each screen change (PBO), the R/3 System sends all data for display on the new screen to the ITS. The ITS merges this data with the relevant HTML template and passes the finished HTML page to the Web server.

When the Internet user enters data on this page, the Web server returns the data to the ITS, which in turn passes it back to R/3. The R/3 System receives this data, merges it with the relevant ABAP fields and triggers PAI processing.

This tutorial is designed to be read as a continuous document. It covers all the steps you have to take if you want to convert R/3 dialog transactions to Web transactions based on the Web Transactions implementation model and use the SAP@Web Studio as development environment.

• Introductory sections cover essential prerequisites and describe how to set up the SAP@Web Studio environment
• Six lessons covering eight transactions demonstrate how to generate Web transactions from R/3 transactions. In these lessons, you learn how to:

• Convert an existing R/3 transaction to a fully fledged Web transaction that can be run from any Web browser
• Modify the transaction progressively in order to add more features

• A concluding section shows you how can source-control services created in the SAP@Web Studio by checking them into the R/3 Repository

This tutorial does not teach you how to create dialog transactions in R/3. It assumes that you are familiar with ABAP programming techniques, and that you know how to use the various programming tools available in the ABAP Workbench.

For detailed information about ABAP programming techniques and ABAP Workbench tools, click on the relevant link below.

If the links do not work from your current location, and you are outside the R/3 System, log on to the latest release and follow the directions for the documentation you want to view.