How to configure SAP Web Dispatcher for URL Rewriting?
As of release 7.10 the SAP Web Dispatcher includes a modification handler which can be configured for rewriting URLs :
With the parameter icm/HTTP/mod_<xx> you can configure modifications of HTTP Requests and define rules by which the SAP Web Dispatcher changes the HTTP request before it forwards it. This includes header field manipulation, URL rewrite and other functions. A complete set of possibilities of configurations can be found in the online documentation, as well as a detailed description of how to configure rewriting URLs. Following link.