Solution : https://service.sap.com/sap/support/notes/845917 (SAP Service marketplace login required)
Key words : 
sapbwnews bw sp13 netweaver'04 stack 13, 10 content            import support package 21, 0b            import support package 27, 50            import support package 13, 1 content support package 21, 0b support package 27, sapbwnews bw 3, support package, solution bw 3, support packages
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| 804214 | |
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| 723263 | SAPBWNews BW 3.1 Content Support Package 21 | 
| 723258 | SAPBWNews BW 3.0B Support Package 27 |