Solution : https://service.sap.com/sap/support/notes/616399 (SAP Service marketplace login required)
Key words : 
terms query variable optional reason, row '   nnn   assign g_ok_%, 0b            import support package 13, 1c            import support package 07, additional comment lines, 0b support package 13, 1c support package 07, bw support packages, optional variable, support package
Related Notes : 
       
| 539829 | SAPBWNews BW 3.1 Content Support Package 07 | 
| 523278 | SAPBWNews BW 3.0B Support Package 13 |