You are using SAP NetWeaver Identity Management 7.1 or 7.2. You defined mandatory multivalue attributes that are displayed on the Identity Management User Interface. But there is no red star next to the entry field indicating that this is a mandatory field.
Restrictions within the UI prevent the use of the red star to indicate multivalue fields as mandatory.
troubleshooting, Manage tab, Web user interface, multiselect, IdM, Web UI