Solution : https://service.sap.com/sap/support/notes/793186 (SAP Service marketplace login required)
Key words : 
application group' -> 'sap application components' -> 'sap scm' -> 'sap scm 4, menu path 'download' -> 'support packages & patches' -> 'entry, menu path 'sap support packages, 1' -> 'scm optimizer' -> 'sap scm optimizer 4, terms optimizer solution support package 04, dem dokument 'sap scm, sap software distribution center, symptom scm optimizer 4, composite sap note, support package schedules'
Related Notes : 
       
| 703774 | SCM 4.1: Installing an APO Optimizer version |