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SAP BC comes with its own web
transaction SAP services that facilitate the retrieval of data from SAP R/3
systems and allow optimum access of web transactions (Fig.2.). This
communication between web transactions and SAP BC takes place on the basis of
HTTP and involves the exchange of XML documents with the contents of
parameterized calls or their results.
wtcSAP class sends and receives these
documents with the help of the HTTP host adapter, converts the data into
corresponding Java Script objects and acts as a Java Script API offering access
to SAP R/3
Fig: Components for Web Transactions Facility for SAP
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