Solution : https://service.sap.com/sap/support/notes/571513 (SAP Service marketplace login required)
Key words : 
terms function module call function exception reason, call function module rsdu_exec_sql, solution import support package 08, function module parameter, function group rsdu_sql_db6, symptom checkman error, function module, bw support packages, 0b support package 08, exception 'internal_error'
Related Notes : 
       
| 523240 | SAPBWNews BW 3.0B Support Package 08 |