Solution : https://service.sap.com/sap/support/notes/456287 (SAP Service marketplace login required)
Key words :
directories support case sensitive user names, additional key words user, sap systems user names, symptom user names, user names differ, user names simpson, user master record, prerequisites inherent property, enterprise portal depend, case-sensitive
Related Notes :
| 448828 | EP 5.0: Central Note for EP-PIN-USM (User Management) |