Solution : https://service.sap.com/sap/support/notes/640183 (SAP Service marketplace login required)
Key words : 
loading infocube/ods xxx, error message rsm1 126 indicating, 0b            import support package 33, 1c            import support package 25, 0b            import support package 15, 1 content            import support package 9, 0b support package 33, 1c support package 25, 0b support package 15, deletion process terminates
Related Notes : 
       
| 571720 | SAPBWNews BW 3.1 Content Support Package 09 | 
| 571698 | SAPBWNews BW 3.0B Support Package 15 | 
| 523205 | SAPBWNews BW 2.1C Support Package 25 | 
| 523193 | SAPBWNews BW 2.0B Support Package 33 |