Solution : https://service.sap.com/sap/support/notes/1304646 (SAP Service marketplace login required)
Key words :
software component sap_hrrxx sap hr reused, symptom importing parameter is_cobra, optional importing parameter is_cobra, software component sap_hr, importing parameter is_cobra, importing parameter out_curre, terms hr_ben_calc_benefit_cost reason, user exit exit_saplhrben00general_008, manual pre-implement, support package levels
Related Notes :
358451 | Importing parameter missing in user exit PBEN0008 |