Solution : https://service.sap.com/sap/support/notes/869488 (SAP Service marketplace login required)
Key words : 
sapbwnews bw support package 14 netweaver'04 stack 14, duplicate list result reason, 10 content            import support package 22, 0b            import support package 28, 50            import support package 14, 1 content support package 22, provide advance information, solution bw 3, support package, support package 28
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| 856562 | X299 Brain in Saplrrk0; Form SETXX_FUELLEN_15-02- | 
| 854514 | X299 Brain in SAPLRRK0; FORM RGC_PFLEGEN_08-01- | 
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| 836439 | SAPBWNews BW Support Package 14 NW'04 Stack 14 RIN | 
| 821772 | X299 Brain in SAPLRRK0, Form RGC_PLEGEN_M-01- | 
| 783252 | SAPBWNews BW 3.1 Content Support Package 22 | 
| 783170 | SAPBWNews BW 3.0B Support Package 28 |