Solution : https://service.sap.com/sap/support/notes/952692 (SAP Service marketplace login required)
Key words : 
older application components contained, older application components, newer application components, java server pages, jsp-based iviews, -based ess services, internet transaction server, terms mss reason, sap learning solution, separate sap note
Related Notes : 
       
| 1245560 | Composite SAP Note : XSS Documentation | 
| 1071693 | Manager's Desktop: Converstion to SAP Manager Self-Service | 
| 1048386 | SAP MSS/ESS: HCM Processes & Forms - Web Dynpro ABAP | 
| 1007341 | SAP ERP 2004/2005 - supported ESS/MSS system landscapes | 
| 1004528 | SAP Self Services: Business packages and components | 
| 953254 | Transfer of ERP processes (HCM) into new functions | 
| 952693 | MSS: Interactive forms and HCM processes and forms | 
| 905135 | ITS 6.20 logon to system with 7.0 kernel not possible | 
| 903319 | Composite note: MSS ERP 2005 (Human Resources Management) | 
| 870126 | ITS-based ESS services in SAP ERP2005 | 
| 709038 | SAP Integrated ITS | 
| 197746 | Maint. strategy: Internet Transaction Server (ITS) |