Solution : https://service.sap.com/sap/support/notes/657982 (SAP Service marketplace login required)
Key words : 
reference type rc27x-flg_sel, set import parameter i_check_only, import parameters i_no_dialog, function module co_ext_activate_delete_flag, function module, deletion flag, terms check_flag, check_only_imp reason, prerequisites note 484689, program correction
Related Notes : 
       
| 484689 | Syntax error in function group COS6 |