Solution : https://service.sap.com/sap/support/notes/853509 (SAP Service marketplace login required)
Key words : 
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Related Notes : 
       
| 1278666 | SAP NetWeaver Portal Platform NW7.0, SPs19 Central note | 
| 1247019 | SAP NetWeaver Portal Platform NW7.0, SPs18 Central note | 
| 1172497 | SAP NetWeaver Portal Platform NW7.0, SPs17 | 
| 1148249 | SAP NetWeaver Portal Platform NW701, Ehp1 SP0 | 
| 1145978 | SAP NetWeaver Portal Platform NW7.0, SPs16 | 
| 1117743 | SAP NetWeaver Portal Platform NW7.0, SPs15 | 
| 1108828 | Using Federated Portal Network in xPD 2.0 SP11 and Above | 
| 1077677 | SAP NetWeaver Portal Platform NW7.0, SPs14 | 
| 1044645 | Using Federated Portal Network in xRPM40 SP8+ | 
| 1042841 | SAP NetWeaver Portal Platform NW7.0, SPs13 | 
| 1013572 | SAP NetWeaver Portal Platform NW04s, SPs12 | 
| 1008774 | Release Restr.: Usage Type EPC of SAP NetWeaver 2004s | 
| 988202 | SAP NetWeaver Portal Platform NW7.0, SPs11 | 
| 982502 | Portal Usage Types EP and EPC | 
| 976673 | SAP NetWeaver Portal Platform NW7.0, SPs10 | 
| 975942 | deadlock in sql server on table EP_PRT_CACHE | 
| 969413 | SAP NetWeaver Portal Platform NW7.0, SPS09 | 
| 950400 | SAP NetWeaver Portal Platform NW7.0, SPS08 | 
| 932570 | SAP NetWeaver Portal Platform NW7.0, SPS07 | 
| 919388 | Central Note: Visual Composer for SAP NetWeaver 2004s | 
| 916545 | Central Note for External-Facing Portal (NW 7.0) | 
| 880482 | Central Note: Federated Portal Network (SAP NetWeaver 7.0) | 
| 863837 | Central Note for "Multitenant Portal" Scenario (SAP NW2004s) | 
| 852008 | Release Restrictions for SAP NetWeaver 2004s |