Solution : https://service.sap.com/sap/support/notes/1650680 (SAP Service marketplace login required)
Key words : 
symptom incorrect log messages, prerequisites incorrect check, solution kindly implement, role assigned successfully, log message, role provisioning, profile page, grcpinw reason, enqueued users, / backend system
Related Notes : 
       
| 1640992 | Master Note for SAP Access Control 10.0 - Support Pack 7 |