Solution : https://service.sap.com/sap/support/notes/1237816 (SAP Service marketplace login required)
Key words : 
sap solution manager creates wrong host names, dbs/mss/server=<hostname>\<sql server instance, open \\sapmnt\<sid>\sys\profile\default, j2ee/dbhost=<hostname>\<sql server instance, \usr\sap\trans\eps\, dbs/mss/server, system stack rejected reason, software feature sap ehp1, microsoft sql server, sap solution manager
Related Notes : 
       
| 1310850 | JUP fails due to wrong default parameter definition | 
| 1309239 | Configuration Wizard: PI NetWeaver initial setup |