Solution : https://service.sap.com/sap/support/notes/1370719 (SAP Service marketplace login required)
Key words : 
runtime error getwa_not_assigned_range occurs, terms input-ready query, solution sap netweaver bi 7, input-ready query, sap netweaver bi 7, sap nw bi 7, sapbinews nw bi 7, field symbol <l_x>, %ct sumct reason, 00            import support package 23
Related Notes : 
       
| 1432265 | |
| 1371201 | System error in program SAPLRRK0 & form RGC_PFLEGEN_06-01- | 
| 1369212 | SAPBINews NW 7.01 BI ABAP Support Package 06 | 
| 1367864 | SAPBWNews NW BW 7.11 ABAP Support Package 04 | 
| 1367799 | SAPBINews NW7.0 BI ABAP Support Package 23 | 
| 1260071 | SAPBINews NW 7.10 BI ABAP Support Package 08 |