Solution : https://service.sap.com/sap/support/notes/711093 (SAP Service marketplace login required)
Key words : 
sp 13 web dynpro supports reverse proxy usage due, sap interactive forms/print formsadobe reader version 6, stack11 web dynpro java supports mozilla 1, restrictions scalabilitythe current adobe document services, hp/ux pa-riscthe java systemcopy, limited team development capabilitiescomposite application designtime, sap netweaver developer studiothe par upload, reverse proxy usageweb dynpro supports, bc-wd-jav-adb release, bc-wd-jav-run release
Related Notes : 
       
| 803018 | Central note for NetWeaver04 High Availability capabilities | 
| 786673 | SAP Web AS 6.40 SR1 on Windows: Oracle | 
| 786608 | SAP Web AS 6.40 SR1 Java on Windows | 
| 785848 | Hom./Het.System Copy SAP Web AS 6.40 SR1 Java | 
| 765718 | Installing PSDOCB 1.0 on SAP NetWeaver 04 | 
| 763772 | Installing SAP IS-M/AMC 1.0 on SAP NetWeaver 04 | 
| 720298 | Inst. Content Management Collaboration on Web AS 6.40 | 
| 707730 | Release Restrictions of SAP NetWeaver '04 |