As your friend already done MBA in Marketing and Finance, he is already very well equipped to make career in a corporate sector. Suggest him to work for 2-3 years before going for another course. Work experience will be more useful than an additional course right after MBA. One year of working in Marketing or Finance will take him much further when he applies for jobs next year than another course. The best time to take another course will be after 2-3 years of working. After working for some time, he may consider SAP course. As per his interest he may explore SAP. After SAP course he might get opportunity as SAP consultant. SAP course will help him to improve his productivity and functional knowledge in his domain.