Have a look at the documentation:
http://help.sap.com/saphelp_webas620/helpdata/en/2d/64d023e74911d6b2e400508b6b8a93/frameset.htm
Regards
Gregor
Hi,
You can search the internet for a javascript implementation for consuming webservice. there are lot of examples available. Once after getting the result(XML) then u can prase it on the client side or parse it on server side using CALL TRANSFORMATION within ABAP.
if you need to call a SAP (of another SAP system) webservice (RFC's from WAS6.2 ) then the documentaion link provided by Gregor Wolf will be useful.
To get the WSDL for SAP WebService (RFC) you can use the following link.
http://<server>:<port>/sap/bc/bsp/sap/webservicebrowser/search.html
Also i suggest you to take a look at http://www.topxml.com/sap/default.asp which has got some good documentation for XRFC.
Regards
Raja
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