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How to provide an SAP R/3 4.5B application server with a Web service interface

EXPERT RESPONSE FROM: Austin Sincock

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QUESTION POSED ON: 03 February 2009
We are still on SAP R/3 release 4.5B. Is it possible to create a Web service from SAP so that we can share data with our partners?

Yes. Developing this will be a three-step process. First you will need to create a remote-enabled function call (RFC) module that encapsulates the request/response data that you need to make available via Web service.

Next you will need to build a Java Web service using SAP's Java JCo connector that receives incoming HTTP Web service requests. Finally, you will have to translate that data into a JCo function call that invokes the RFC that you have deployed in your R/3 application server.

Check out my articles on the JCo connector Java/SAP Development. You can also find a full sample application in my book Enterprise Java for SAP.

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