1631704 - Language parameter issue when accessing KM Content or URL iviews or AI iviews

• After upgrading to SP21 or any higher version, the "request.language" parameter that before resolved in lowercase (before SP20) now resolves in uppercase. 
• This causes that certain content is not found in KM.When you try to access certain KM  content it will give you 404 error( the requested resource is not available).
• This issue can also occurs for URL iViews as well as appintegrator iViews.

 SAP NetWeaver 7.0 SP21 and above

 Enterprise Portal 7.0, EP 7.0, Enterprise Portal 7.01, EP 7.01, Enterprise Portal 7.02, EP 7.02, Enterprise Portal 7.03, EP 7.03, Enterprise Portal 7.1, EP 7.1, Enterprise Portal 7.2, EP 7.2, Enterprise Portal 7.30, EP 7.30, Enterprise Portal 7.31, EP 7.31, Enterprise Portal 7.40, EP 7.4, Enterprise Portal 7.50, EP 7.5, 404 error, request.language, request.Locale, generic iView, Knowledge Management, application integration, locale, language, ISO Language Code definition, ISO-639, java.util.locale, java library, upper case, lower case , KBA , EP-PIN-PRT , Portal Runtime , EP-KM , Enterprise Portal - Knowledge Management and Collaboration , Problem