Solution : https://service.sap.com/sap/support/notes/1081356 (SAP Service marketplace login required)
Key words :
symptom transaction users_gen works improper, incomplete error-message handling, enterprisebuyer professional edition, underlying update modules, e-mail address, manage employee data, manage user data, transaction users_gen, error message, employee data
Related Notes :
1104666 | SRM 6.0: USERS_GEN - Role is not saved |